How to Perk Coffee

Reviewed by Jennifer Levasseur

Last Updated: December 19, 2023 Approved

Whether you love the outdoors and you're looking for a way to have a steaming pot of coffee in the wilderness without access to fancy modern brewing technology or just looking for an easy, low-cost way to make your morning cup of joe, using a percolator can be a wise choice. Percolators are very simple to assemble and use — though some modern machines are powered by electricity, traditional percolators only need a heat source like a stove or a fire to produce coffee, making them a great choice for the hands-on, practical-minded coffee drinker. To learn how to percolate (or "perk") your coffee, get started with Step 1 below.

Part 1

Part 1 of 3:

Stovetop Percolator

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1
Add water to the reservoir.^{[1]
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Research source} As with other forms of brewing coffee (like "drip" brewing methods), the first thing you'll need to do is decide how much coffee you want to brew, then add this amount of water to the "tank" or "reservoir" portion of the percolator. Depending on how your percolator is assembled, you may simply be able to open the lid and pour your water in, or you may need to remove the upper "basket", which holds the coffee grounds during brewing, to access the reservoir.
- Most standard-size percolators will hold about 4 - 8 cups, though differently-sized varieties exist. As a reference point, four cups of coffee equates to roughly two standard-sized mugfuls.
2
Add the chamber and tube assembly. Next, if you had to remove the upper basket/chamber or the central tube to add the water, replace them now. Though every percolator is different, the basic construction of most is nearly identical — the coffee grounds should sit above the water in a small basket or chamber lined with small holes. A narrow tube should extend from this basket down into the water below.
- When the water heats, it will naturally move us the tube and into the coffee grounds. As it soaks into the grounds, it will pick up some of their aroma and flavor and drain back down into the water below, where the cycle will repeat.
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3
Add ground coffee to the basket.^{[2]
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Research source} Next, add your coffee grounds to the upper basket lined with small holes. You can use either fresh-ground coffee or pre-ground beans — which ever you prefer.^{[3]
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Research source} Use roughly 1 tablespoon (15 ml) for each cup of water you use if you like your coffee strong.^{[4]
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Research source} For weaker coffee, use 1 teaspoon per cup. As you use your percolator, you may find that you need to adjust these measurements to get your coffee tasting just right.
- As we'll discuss below, for most percolator brewing, you'll want to use a light, low-acidity roast and a fairly coarse grind — coarser than what you might use for a standard drip machine.
4
Place your percolator over a medium heat source. You're ready to go — now, all you need to do is heat up the water in the bottom of your percolator and physics will do the rest. Your goal is to heat up your water to the point that it's quite hot, but not boiling.^{[5]
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Research source} The hotter the water is, the more quickly it will absorb flavor from the beans, which means that boiling water can lead to coffee that's too strong. Use medium heat to get your water just below boiling, then reduce the heat to keep it hot, but not boiling or simmering. If you see steam at any point, your percolator is too hot and you should reduce your heat (or carefully move your percolator to a cooler area).
- In terms of heat sources, stove tops offer the most control, but you can also use campfires if you keep a careful eye on your coffee's progress.
- Always operate your percolator with medium heat from below — don't use an oven or another all-around heat source or you risk damaging your equipment and ruining your pot of coffee.
5
Watch the glass globe to monitor your progress.^{[6]
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Research source} Many percolators contain a glass or see-through globe at the top to allow you to monitor the progress of your coffee as it brews. As the water begins to circulate through the percolator, you'll notice it sputter or bubble within this globe. The faster the sputtering, the hotter your water is, and the darker the water, the more "done" the coffee is. Ideally, once you reach a nice medium heat, you want to see bubbling every few seconds or so. This represents a good "pace" for percolating.
- Don't use percolators with plastic globes — coffee aficionados claim that exposing hot coffee to plastic can cause the taste of the plastic to transfer into the coffee, resulting in a foul-tasting brew.
6
Allow your coffee to percolate for about ten minutes.^{[7]
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Research source} Depending on how strong you like your coffee and how hot you're heating your water, your percolator's ideal brewing time may differ. Note that brewing for ten minutes at the suggested medium pace will produce a pot of coffee that's fairly strong compared to an average pot of drip coffee. Obviously, for weaker coffee, you'll want to brew for less time, and for even stronger coffee, you'll want to brew for longer.^{[8]
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Research source}
- Using a kitchen timer to keep track of your coffee's progress can be a smart idea, but don't simply set your timer and come back when it goes off — if you do this, it's easy to over-heat your coffee and create a bitter, muddy product.
7
Remove your percolator from the heat source.^{[9]
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Research source} When your coffee has finished percolating, carefully remove it from its heat source (use a towel or oven mitts to avoid burning yourself). Immediately open the percolator's lid and carefully remove the basket which contains the soaked coffee grounds. Discard the grounds (or recycle them). Don't leave the grounds in the percolator — if you do this, they can spill into your cup when you pour the coffee and may continue to make your coffee stronger by dripping into the coffee in the reservoir.
- After removing the basket with the grounds, your perked coffee is ready to serve. Enjoy your strong, old-fashioned style cup of joe!

Part 2

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Electric Percolator

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1
Add water and coffee as normal. Automatic electric percolators operate according to the same physical principals as stove top percolators, but they generally require less work and supervision on your part.^{[10]
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Research source} To begin, add your water and coffee as you normally would. Decide how much coffee you want, then add this amount of water to the bottom chamber. Remove the basket from the upper chamber and add your coffee grounds.
- The ratios for the amount of grounds you should use for your water is the same for electric percolators as it is for stove top percolators — use 1 tablespoon per cup of water for strong coffee and 1 teaspoon for weak coffee.
Once your percolator is assembled and full of coffee and water, your work is basically done.^{[11]
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Research source} Connect the percolator's plug to a nearby outlet. Most percolators will begin to heat automatically, but if yours has an "on" button, you may need to hit this at this point. Your percolator's internal heating element should activate and begin to heat the water in the bottom chamber, causing it to cycle up the tube, through the coffee grounds, and back down into the reservoir as it would in a standard percolator.
3
Wait about seven to ten minutes for the coffee to brew. All you need to do now is wait. Most electric percolators take about as long to finish brewing as stove top percolators — usually about seven to ten minutes. Many electric percolators will have an internal sensor that prevent them from heating the coffee past its optimal temperature, but if yours doesn't, you may need to watch the percolator as it brews. Otherwise, assuming there are no small children or pets in the area who may burn themselves on the hot machine, simply set a timer and let your percolator do the rest.
- Remember that if you ever see steam coming out of the percolator, it's brewing too hot. If you see this with an electric percolator, unplug immediately and allow it to cool for a minute or two before re-connecting it.
4
Unplug immediately and remove grounds after percolating. When your timer goes off (or, if you have a percolator with an automatic timer, it shuts off automatically), unplug your percolator. Carefully open the lid and remove the upper basket containing the soaked coffee grounds. Discard these as you wish.
- At this point, you're done! Serve your coffee and enjoy!

Part 3

Part 3 of 3:

Technique

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1
Choose a smooth, low-acidity coffee. As noted above, coffee that's brewed in a percolator can tend towards being somewhat strong, bitter, and "muddy". This is because, unlike many other brewing methods, percolating involves continuously recirculating water through the coffee grounds, rather than simply allowing it to drain through once. However, with a few simple tricks, it's possible to make coffee in a percolator that's not over-strong. For instance, starting with a coffee roast that's classified as being light, smooth, low-caffeine, and minimally acidic can help reduce the bitterness of percolated coffee. Though percolating will usually make your coffee stronger than it would otherwise be, starting with "mild" ingredients helps minimize this effect.
- If you're looking for weaker coffee, try buying a roast labelled "mild" or "smooth" from your favorite coffee brand (like Folgers, etc.) or opt for a "dark" roast — though these can be bitter, they have lower caffeine content and acidity than light roasts. If you have the money to spend, you might also want to try a mild specialty roast, like Oromo Yirgacheffe Ground Fair trade Coffee. Also, don't forget that you also always have the option to brew decaf!
2
Use a coarse grind.^{[12]
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Research source} When it comes to coffee grounds, in general, the finer the beans are ground, the more quickly they'll transfer their flavor to the water and the stronger coffee they'll produce. Because of this, when you use a percolator to make coffee, you'll usually want to use a coarse grind. Coarse-ground beans will interact with the water less quickly, resulting in a final pot that's not quite as strong as it would otherwise be.
- If you have your own coffee grinder, try using its "coarse" setting. Otherwise, if you buy your coffee pre-ground, look for a "coarse" label on the packaging.
3
Keep water temperature between 195 - 200^o F (90.6 - 93.3^o C).^{[13]
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Research source} When percolating, temperature is key — too cold and the water won't travel up the central tube, but too hot and you risk having an over-done cup of coffee that unappealingly strong. For optimal brewing, you'll usually want to keep your water between 195 - 200^o F for the duration of the percolating process. This is just below the point that water begins to steam and boil (212^o F (100^o C)), but not so cold that the brewing process will be needlessly prolonged.
- Try using a kitchen thermometer to check the temperature of your water as your coffee percolates. For an accurate reading, try not to touch the thermometer to the hot metal sides of the pot — instead, carefully submerge it in the liquid.
4
Allow to settle after brewing to eliminate cloudiness. Percolated coffee has a reputation for being somewhat cloudy or "muddy". Luckily, in most cases, this is easy to fix. Simply allow your coffee to sit for a few minutes after percolating. This gives the particles and sediment suspended in the water time to settle, resulting in a clearer cup of coffee.
- Note that doing this can produce a "puddle" of sediment at the bottom of your cup when you're done drinking. You may want to avoid drinking this, as some coffee drinkers find this to be bitter and unappetizing.
5
Keep percolating time short. If you can't get your percolated coffee to taste better with any other method, simply reduce the amount of time that you allow it to percolate for. As noted throughout the article, percolating coffee can produce an unusually strong final product compared to other methods, so reducing the amount of time that you allow your coffee to brew can counteract this. Though most brewing instructions will recommend percolating for about seven to ten minutes, it's OK to brew for as short as four or five minutes if it results in coffee that you find more palatable.
- If you're unsure of how long to percolate your coffee, err on the short side, but be willing to experiment to find the perfect brewing length that's just right for you.
Check your brew time. "I received a percolator for my camper and the first pot I brewed was way too weak. I didn't use enough grounds and did not let it brew long enough. I used this article for my 2nd attempt and it worked perfectly. It reminds me of being at my grandparents' growing up and that great coffee aroma!" - Rob M.

Percolated coffee is worth it for the smell. "I bought a really nice-looking percolator at an estate sale, it reminded me of my great aunt Dee and the wonderful coffee smell I would float in on when I was a child. I used this article to make my first of many percolated pots of coffee, and these instructions made it so simple." - Cherri V.

Try it with cinnamon rolls. "Preparing a rich cup of coffee in a percolator takes time and patience but is well worth the effort. My grandparents came to the US from Sweden, and I grew up with perked coffee and Swedish cinnamon rolls for breakfast. The aroma of coffee and cinnamon evokes fond memories of my Swedish origins. I always say, ‘Perk 1 min/cup, including 1 min to let it settle. Perkfection!" - SusanLee A.

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Question

Is there a brand of coffee that leans towards a sweeter, less bitter flavor?

Michele

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There are many brands or rather roasts that do. You want a light breakfast roast, not a dark roast. The darker the roast, the more bitter. There are also many coffees that are pre-flavored, such as hazelnut or Irish cream. You can find most of the different flavors at specialty stores. You can, of course, always add milk and sweetener to reduce bitterness, or reduce the bitterness of the coffee by using less grounds for drip or perked coffee makers and/or not letting it steep as long in a French press. The longer coffee steeps and/or the higher the ratio of grounds to water, the richer and, for some, more bitter it will taste.

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Does it quit perking when finished?

Community Answer

No. It'll keep perking as long as it's on the heat. That's why you have to time it to your taste preference.

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I have a percolator without a bubble on top; how do I know it's percolating?

Michele

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If you don't have a see-through top, then you'll have to listen for the perk. You should hear the coffee "jumping" up and down. If you're using a stovetop percolator, start on medium to medium-high heat. Once you hear the water start to bubble up, reduce the heat to where you hear it "perk" every 2 - 3 seconds. Leave it like this for 5 - 10 minutes and your coffee should be ready.

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Tips

For a low-calorie sweetener, use Splenda®, Sweet N' Low®, Equal®, Stevia® or Agave Nectar.^{[14]
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Always reseal coffee bag tightly. Oxygen is poison for the coffee flavor.

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Because coffee is mostly water it is very important to brew it using a good quality water. Nothing kills the taste of coffee like chlorine. Use water that has been filtered (as a minimum) through an activated carbon filter to remove chlorine taste and odor.

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Warnings

Do not start a percolator with hot water.

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As always when working with hot liquids, be careful.

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A good coffee maker will keep the temperature of the coffee between 190 and 200 degrees F throughout the percolation process. A percolator, unfortunately, tends to boil the coffee ruining the best of the flavors.

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Percolating coffee starts drawing color and flavor out of the coffee grounds from the first percolation. That's where the positives of percolating end. Percolating bubbles the water through the grounds continuously until the heating element shuts off.

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