Stovetop Espresso Brewing: How to Use the Classic Stovetop Brewer

The stovetop espresso maker has been brewing coffee in Italian kitchens since the 1930s. Alfonso Bialetti designed it. His son Renato sold hundreds of millions of them. One of them is probably in your cabinet right now, being used wrong.

The stovetop brewer is not complicated. But it is easy to make bad coffee with, because the default approach (fill with cold water, crank the stove to high, wait until it screams) produces bitter, metallic, over-extracted coffee that gives the brewer its undeserved reputation as a device for people who do not care about taste.

The fix is straightforward. Use less heat, start with hot water, and take it off the stove sooner.

How it works

The stovetop brewer has three chambers:

1. Bottom chamber: holds water.
2. Filter basket: sits in the bottom chamber and holds ground coffee.
3. Top chamber: collects the brewed coffee, with a metal filter underneath.

When you heat the bottom chamber, the water heats and generates steam. The steam creates pressure (about 1 to 2 bars) that pushes the water up through the filter basket, through the coffee, through the top filter and into the top chamber. The coffee flows up through a chimney in the center of the top chamber [1] [2].

This is not espresso. Espresso uses a pump to generate 9 bars of pressure. The stovetop brewer uses steam to generate 1 to 2 bars. The extraction is different, the body is different, and the cup is different. It is closer to espresso than drip coffee, but it is its own thing.

The method

What you need

• A stovetop espresso maker (any size; they are sold by cup count, but “cups” are 2-ounce demitasse servings, not mugs)
• Coffee ground medium-fine (between espresso and drip)
• A kettle for pre-heating water
• A stove (gas, electric or induction if you have an induction-compatible model)
• A towel or oven mitt

Steps

1. Boil water in a kettle. This is the most important step that most stovetop brewer users skip. Starting with hot water means the pot spends less time on the stove, the grounds are exposed to heat for less time, and the coffee tastes cleaner and less metallic.

2. Fill the filter basket with coffee. Grind medium-fine and fill the basket to the rim. Level the surface with your finger. Do not tamp. The stovetop brewer does not have enough pressure to push water through a tamped bed. You will get a slow, choking brew or a pressure buildup that triggers the safety valve.

3. Pour hot water into the bottom chamber. Fill to just below the safety valve. Do not cover the valve. Use a towel or oven mitt to hold the bottom chamber while pouring, because it will be hot immediately.

4. Insert the basket and screw on the top chamber. Make sure the rubber gasket is seated properly and the pot seals tightly. Use the towel if the bottom is too hot to hold.

5. Place on the stove at low to medium heat. This is where most people go wrong. High heat builds pressure too fast, pushes water through the coffee too aggressively and overheats the metal body. Low to medium heat gives a slow, controlled extraction [1].

6. Leave the lid open. You want to watch what happens. The coffee will start flowing into the top chamber after a minute or two. It should flow slowly and steadily, like honey. If it sputters and spits from the start, the heat is too high.

7. Remove from heat when it starts sputtering. Once the top chamber is mostly full and the flow changes from a steady stream to a hissing, sputtering spray, the water in the bottom is nearly gone and steam is pushing through the grounds. Take the pot off the heat immediately. Run the bottom under cold water or set it on a wet towel to stop the extraction.

8. Pour and drink. The coffee is ready. It is concentrated, so you can drink it straight (like the Italians do) or dilute it with hot water for a longer drink.

Why the heat matters

The stovetop brewer’s biggest enemy is too much heat. Here is what happens:

High heat: Steam builds fast. Water is forced through the coffee aggressively. The grounds are exposed to high temperatures for a long time. The metal body gets very hot and continues heating the coffee even after the flow stops. The result is bitter, metallic, astringent coffee that tastes burnt.

Low heat: Steam builds slowly. Water passes through the coffee gently and steadily. The grounds are heated for less time. The metal body stays cooler. The result is smooth, sweet, full-bodied coffee with none of the metallic harshness.

The difference is dramatic. The same brewer, the same coffee, the same grind, high heat versus low heat, and you get two completely different drinks.

The pre-heated water trick

Starting with pre-boiled water in the bottom chamber is the single biggest improvement you can make to stovetop brewing. Here is why:

With cold water, the pot sits on the stove for several minutes while the water comes to temperature. During that time, the grounds in the filter basket are being heated by the rising steam and the conducted heat from the metal walls. They start extracting before any water reaches them, and the dry heat degrades flavor compounds [2].

With hot water, the extraction starts within a minute. The grounds spend less time being dry-heated, and the brew cycle is shorter. Less time on heat means less bitterness.

Common mistakes

Tamping the coffee. The stovetop brewer does not generate enough pressure to push water through a tamped puck. Tamping causes the safety valve to pop, the brew to stall, or both. Fill the basket, level the top, and leave it.

High heat. Already covered. Low to medium. Always.

Grinding too fine. Espresso-fine grinds slow the flow too much and cause over-extraction and excessive pressure. Medium-fine is the target: finer than drip, coarser than espresso.

Not removing from heat. Once the sputtering starts, the coffee in the top chamber is getting hit by superheated steam, which makes it bitter. Take the pot off the heat and cool the bottom to stop the process.

Letting it sit on the stove between uses. Residual coffee oils in the metal build up and go rancid. Disassemble the brewer after each use, rinse all three chambers with hot water, and let them dry. Do not use soap (it can strip the seasoning and leave a taste) unless the pot has visible residue buildup.

Sizing

Stovetop brewers are sized in “cups,” and those cups are 2-ounce Italian demitasse servings.

Brewer size	Output	Serves
1-cup	~2 oz (60 ml)	1 espresso-style serving
3-cup	~5 oz (150 ml)	1 mug or 2-3 small servings
6-cup	~10 oz (300 ml)	2 mugs or 4-6 small servings
9-cup	~16 oz (450 ml)	3 mugs

Buy the size you will use most. A stovetop brewer works best when the water chamber and the filter basket are both filled to their intended levels. Under-filling either changes the pressure dynamics and usually makes worse coffee.

The stovetop brewer is not trying to be an espresso machine. It is a stovetop device that makes concentrated, strong, full-bodied coffee with minimal equipment. When you stop trying to make it something it is not and start using the technique it responds to (low heat, hot water, timely removal), it makes a cup that is worth respecting on its own terms.

Caffeine, heat and your machine. The FDA says up to about 400 mg of caffeine a day is not generally associated with negative effects for most healthy adults; pregnancy, some heart conditions, anxiety, reflux and certain medicines can change that, so check with a clinician if any apply. Steam wands and group heads are hot enough to burn. Unplug and cool a machine before opening or cleaning it, and follow the manufacturer’s descaling instructions.

Related reading: How to Dial In a New Bag of Coffee | Light Roast vs Dark Roast for Espresso