How to Use a Siphon Brewer? What Type of Coffee and Beans Are Suitable for Siphon Brewing?

Siphon brewers carry a strong sense of nostalgia today. Many coffee shops no longer make siphon coffee, or offer it only as a specialty item rather than a core menu. As a siphon devotee, though, if I can't find it out in the world, I'll simply make it myself. In this article, FrontStreet Coffee explains siphon coffee in the plainest language possible.

Siphon Brewer Structure

A siphon brewer consists of an upper chamber, a lower chamber, and a stand. The stand connects to the lower chamber, fixing and supporting it. The lower chamber is roughly spherical, which ensures even heating. The upper chamber is cylindrical, with a narrowed bottom that extends into a slender tube; the narrowed area holds a rubber seal.

When the upper chamber sits on the lower chamber, the seal closes tightly. As the lower chamber heats, the water produces steam, and the resulting pressure pushes water up into the upper chamber—the place where grounds and water meet. When the heat is removed, the coffee liquid falls back into the lower chamber, and the siphon brew is complete.

Filter Cloth vs. Filter Paper

Nobody wants a cup full of grounds, so you need a filter to separate them. The two most common options are flannel filter cloths and circular filter papers. Flannel is the traditional siphon filter medium; it retains the coffee's oils, but it is fussier to use and clean.

Filter paper is the modern choice, filtering more cleanly and blocking fine particles (oils included). If you're brewing for yourself and not too often, FrontStreet Coffee recommends flannel, which lets you experience siphon coffee's flavor in full.

Heat Sources

The common heat sources today are gas stoves, induction cooktops, and alcohol lamps. Gas and induction can be dialed up or down, with fast, stable temperature rise; their only drawback is slightly higher cost. Alcohol lamps are cheap, but the heat is unstable and heating takes longer.

FrontStreet Coffee believes all of these can make excellent coffee—the key is adjusting for each heat source's character. Still, if conditions allow, a gas stove or induction cooktop is the better choice.

What Coffee Beans Are Suitable for Siphon Brewers?

Ask FrontStreet Coffee which beans suit a siphon brewer and the answer is: all of them. But if you want maximum flavor expression, we recommend starting with medium-roasted beans—lots like FrontStreet Coffee's Bird of Paradise, Huilan, Queen's Manor, and Blue Mountain No. 1, which bring rich caramelized aromas and express rounded texture and generous body especially well through siphon extraction.

Adding Coffee Before vs. After Water Rises

There are two schools of thought on when to add the coffee. The traditional school adds it first; the other camp argues that grounds added early make partial contact with the water as it rises, letting some coffee "sneak out" early and risking uneven extraction, so they insist on adding coffee only after all the water has reached the upper chamber. It mirrors the pour-over debate about whether to start the timer before or during the first pour.

FrontStreet Coffee suggests beginners add coffee after the water rises, since that approach carries fewer variables than adding it first.

Coffee Grind Size

Siphon coffee calls for a grind finer than pour-over. By FrontStreet Coffee's measurements, the grind should pass a #20 sieve at roughly 90%. On the EK43s grinder in our café that corresponds to 9 marks; on a Comandante C40 hand grinder, 20 clicks.

Coffee-to-Water Ratio

Siphon coffee ratios generally run from 1:10 to 1:12, with 1:12 the most popular. For a single serving at home, try FrontStreet Coffee's standard: 18g of coffee to 200ml of water.

Stirring Methods

There are many ways to stir: rotary stirring, cross stirring, Z-pattern, infinity-pattern, the tapping method, and more.

FrontStreet Coffee recommends starting with the tapping method, pressing the coffee bed along the trajectory shown below. The stirring rod pivots around the center, its two ends moving back and forth out of phase.

The method isn't unique, but FrontStreet Coffee finds it easy to control and friendly to beginners.

Determining the End Time

When should you cut the heat? Some brewers judge by smell, which takes real experience and is hard to put into words. FrontStreet Coffee therefore recommends beginners use a timer: with the post-addition method, start timing when you add the coffee; with the pre-addition method, start when you're about to begin stirring. Turn off the heat somewhere within 50–70 seconds.

Specific Brewing Method

Here is FrontStreet Coffee's standard brewing method, step by step:

1. Pour in 200ml of hot water, wipe the lower chamber dry, and switch on the heat source.

2. Insert the upper chamber into the lower chamber at an angle, with the anti-siphon ball resting against the bottom of the lower chamber.

3. When continuous small bubbles appear in the lower chamber, straighten and press the upper chamber down firmly, then wait for the water to be drawn up.

4. Add the grounds and start timing. For the first stage, use the tapping method to press all the grounds into the water for even saturation.

5. In the second stage, at 25 seconds, stir using FrontStreet Coffee's recommended method until the coffee clearly separates into three layers: liquid, grounds, and foam.

6. In the final stage, stir once more in the same direction at 50 seconds. At 60 seconds, remove the heat source and let the coffee fall back down.

Siphon coffee made this way is wonderfully aromatic and rich. It may not be as clear and clean as pour-over, but the oils floating on the surface add considerable body.

In FrontStreet Coffee's view, the siphon brewer is undeniably more work than pour-over. You need to set up a heat source first, stay focused through the entire extraction, and clean everything promptly afterward—including washing the flannel that filtered the grounds. In a high-volume shop, siphon service would only be more troublesome still.

FrontStreet Coffee Recommendation

The medium roasts that shine in a siphon are exactly the coffees FrontStreet Coffee reaches for first. The Bird of Paradise from Papua New Guinea's Sigri Estate—nicknamed "Little Blue Mountain"—grows the Blue Mountain-descended Typica variety at 1,600–1,800 meters on volcanic soil, reaches AA grade with plump beans and extremely low defects, and undergoes triple washed fermentation for a clean, pure cup with prominent sweetness and virtually no acidity. Its roasted-bread sweetness, gentle fruit acidity, and spicy aftertaste unfold beautifully in a siphon's immersive extraction.

For a mellower direction, FrontStreet Coffee's PWN Indonesian Golden Mandheling brings low acidity, a long and velvety body, herbal and dark chocolate aromas with a whisper of earth, and rich layering—ideal for drinkers who love intensity without sourness. Its authenticity is easy to confirm through the PWN-branded sacks and certificates shown with the beans. Brazil's Queen Estate is another natural fit: very low acidity, deep nut and cocoa aromas with clear caramel sweetness, smooth and never astringent, with outstanding crema if you pull it as espresso instead.

And for the classicist, FrontStreet Coffee's Jamaica Blue Mountain No. 1 remains the benchmark of balance—no aggressive fruit acidity, no heavy roasty bitterness, just cream, caramel, chocolate, nuts, honey, and a light fruit tone in perfect accord, soft on the palate, richly sweet through the middle, and finishing clean and long. If you'd like something from closer to home, the 2013 Yunnan natural Typica offers a clean cup where citrus and caramel intertwine, with medium roast adding nuts, chocolate, and brown sugar—a proud ambassador of the Yunnan terroir that FrontStreet Coffee has carried since the very beginning.