How to Brew with a Chemex: A Guide for Indian Coffees
The Chemex is a glass pour-over whose thick bonded filter sets almost every rule of the brew: a coarser grind than a V60, a slower drawdown and a very clean cup. This guide gives a base recipe, adjustments for Indian light roasts and naturals, and what the brewer and its papers cost in India.
The Chemex is a one-piece glass pour-over brewer, but the part that decides how it brews is the paper. Chemex's bonded filters are, by the company's own description, 20–30% heavier than standard filter papers, and they are folded so that three layers sit against one side of the cone. Most Chemex instructions follow from that paper. It is why the grind has to be coarser than for a V60, why a brew takes four minutes or more to drain, why the cup is clean and light-bodied, and why a Chemex copes badly with the dust a kitchen mixer grinder produces.
This guide covers the brewer and its sizes, how to fold and rinse the paper, a base recipe with batch variants, adjustments for Indian light roasts and naturals, water and grinder notes for Indian kitchens, and a troubleshooting table.
What a Chemex is, and which size to buy
A Chemex is an hourglass of borosilicate glass. The upper cone holds the filter and the lower bulb is the carafe, so there is no separate dripper or server. The wooden-collar version has a split wooden band tied with a leather cord to serve as a handle; the Glass Handle series swaps the collar for a moulded glass handle. Chemist Peter Schlumbohm designed it in 1941, and the Museum of Modern Art holds one in its collection.
The groove under the spout is also an air channel. As coffee drips into the carafe, the air it displaces escapes up through that groove. If wet paper seals it, the air has nowhere to go and the brew slows or stops. It is the most common Chemex fault that has nothing to do with grind.
Sizes. The Classic line comes in 3-cup (about 470 ml), 6-cup (30 oz, about 890 ml), 8-cup and 10-cup. A Chemex "cup" is roughly 150 ml, so the 6-cup is a two-to-four-mug brewer, not a six-mug one. The 6, 8 and 10-cup share the same papers (FS-100 pre-folded squares, FC-100 pre-folded circles, FP-1 unfolded circles); the 3-cup takes smaller half-moon FP-2 papers. For one person brewing a single mug most days, the 3-cup fits the dose better. For two people, or for brewing a carafe, the 6-cup is the standard size.
Indian prices. Chemex is imported, and Indian listings seen in October 2026 vary widely. Brewing Gadgets listed the Classic at ₹5,491, Toffee Coffee Roasters listed the wooden-collar model at ₹4,550, and a third-party seller on Amazon.in listed the 6-cup Classic at ₹7,121. One Flipkart listing under the Chemex name was priced at ₹1,373, far below every other listing, so check who the seller is before buying at that price. For comparison, a plastic V60 sells for about ₹500–800.
Papers add to the cost. ARAKU Coffee listed Chemex bonded FC-100 circles at ₹940 for 100, about ₹9 a brew, against roughly ₹2–6 a brew for V60 papers. Not every shop stocks them, so a spare box avoids a week without the brewer. Brewing two cups a day, a year of papers comes to about ₹3,300, which is close to what the brewer itself costs.
Other papers: Standard cone papers fit a Chemex poorly and are thinner. A brew through them drains faster and lets more fines through, so the recipe below will run short. Treat it as a different brew rather than a straight substitute.
Folding and rinsing the filter
Fold if needed
Pre-folded squares and circles are ready to use. An unfolded FP-1 circle is folded in half and then in half again, so one side opens to three layers and the other to one.
Seat the thick side at the spout
Place the three-layer side against the spout. The extra layers are stiff enough to stay off the air channel when wet.
Rinse
Pour hot water through the paper until it is fully wet. This removes paper taste and warms the glass.
Discard the rinse water
Pour it out through the spout while holding the filter in place with a finger.
Check the groove
Make sure the wet paper has not slumped into the air channel before adding coffee.
Brew stopped halfway? If the water stops draining with liquid still sitting in the cone, check the spout before changing the grind. Wet paper sealing the air channel traps air in the carafe. Lifting the filter edge slightly, or sliding a chopstick into the groove, usually lets flow resume.
The base Chemex recipe
Published Chemex recipes are close to one another: a ratio between 1:14 and 1:16.7, a coarse grind, water just off the boil, and four to five minutes in total. The recipes below sit in the middle of those ranges.
Chemex starting recipes
| Method | Grind | Ratio (coffee:water) | Brew time | Notes |
|---|---|---|---|---|
| Chemex, 1 cup (3-cup or 6-cup) | Medium-coarse, one step finer than the 2-cup | 20 g : 320 g (1:16) | 3:00–3:45 | 94–96 °C; bloom 40 g for 30–45 s |
| Chemex, 2 cups (6-cup) | Medium-coarse to coarse (kosher salt) | 30 g : 500 g (1:16.7) | 3:30–4:30 | 94–96 °C; bloom 60 g for 30–45 s |
| Chemex, 3–4 cups (6-cup or larger) | Coarse (sea salt) | 45–50 g : 700–750 g (1:15) | 4:00–5:00 | 94–96 °C; bloom 90–100 g; three main pours |
Heat and rinse
Heat water to 94–96 °C, or just off the boil. Set up and rinse the filter as above, and discard the rinse water.
Grind and level
Grind 30 g of coffee medium-coarse, about the texture of kosher salt. Add it to the filter, shake gently to level the bed, place the Chemex on a scale and tare it.
Bloom
At 0:00, pour 60 g of water in a slow spiral, wetting all the grounds. Swirl gently and wait 30–45 seconds.
First main pour
At about 0:45, pour in slow spirals to 300 g, keeping the stream off the bare paper.
Second main pour
At about 1:30, when the level has dropped a little, pour to 500 g.
Swirl and drain
Give the brewer one gentle swirl to flatten the bed. The drawdown should finish between 3:30 and 4:30.
Serve
Lift out the filter, swirl the carafe to mix the brew, and pour.
This mirrors the two-cup recipes from several established roasters, which use 30 g to 500 g, a 50–60 g bloom and a total time of 3:30–4:30. A widely shared version attributed to James Hoffmann uses the same dose with a larger bloom of about 80 g and water straight off the boil.
Grind compared with a V60. Start coarser than your V60 setting. ICB's V60 guide puts that brewer at 550–850 µm. Chemex recipes describe a texture between kosher salt and sea salt, which works out to roughly 750–1,000 µm. Treat that range as approximate, since it is derived from texture descriptions, not a measured standard. Drawdown time is the more reliable guide. A 500 g brew that finishes well before 3:30 needs a finer grind; one that runs past five minutes needs a coarser grind.
Inside that range the brewer is forgiving. When Prima Coffee compared seven roaster recipes on one grinder, the recipes between 1:14 and 1:16.7 that finished in roughly four to five minutes produced very similar cups. The lowest-scoring recipe was the one that pushed contact time furthest, with a 1:13.5 ratio, a 90-second bloom and a 4:30–5:00 drawdown, and it came out bitter with a drying finish. For a first Chemex, getting the grind and drawdown time right matters more than which published recipe you follow.
Kettle: Pour technique matters less on a Chemex than on a V60, because the thick paper sets the flow rate. A gooseneck kettle still makes pours more even. A narrow-lipped kettle used in slow, low pours also works. ICB's guide to whether you need a gooseneck kettle and scale covers the trade-off.
Adjusting for Indian coffees
ICB's catalog has no separate Chemex brew-method tag. Chemex sits inside pour-over, which is the largest tag in the catalog: 631 in-stock coffees from 93 roasters. Of those, 47% are light or light-medium roasts, against 34% across all in-stock coffees. In product descriptions, 21 active coffees from 11 roasters name the Chemex specifically. Thirteen of those 21 are light or light-medium, and about two-thirds are natural or fermentation-led lots (natural, anaerobic, experimental or carbonic maceration). So the coffees Indian roasters most often suggest for a Chemex are the ones its thick paper handles least well, and for them the adjustments below matter more than the base recipe. Washed coffees appear too. Black Baza Coffee's note for its washed medium-roast Tiger Beetle advises pulling the coffee-to-water ratio "out as much as possible" on a Chemex, which points toward the 1:16–1:17 end of the range. Coffees roasters describe this way are collected on ICB's page of coffees for the Chemex. Twenty-one named listings in a catalog of more than 1,500 in-stock coffees suggest Indian roasters see the Chemex as one pour-over brewer among several, and few write brewing notes for it specifically.
Chemex adjustments by coffee type (two-cup, 30 g)
| Method | Grind | Ratio (coffee:water) | Brew time | Notes |
|---|---|---|---|---|
| Dense washed light roast (high-altitude Chikmagalur, Baba Budangiri; S795, Selection 9) | One step finer than base | 1:16–1:16.7 | 4:00–4:30 | Water off the boil; in Bengaluru, where water boils near 97 °C, pour straight from the boil |
| Natural, anaerobic, experimental | One step coarser than base | 1:15–1:16 | Stop by 4:30 | 90–92 °C; bloom 40–45 s; two or three gentle pours |
| Medium washed or honey | Base | 1:16 | 3:30–4:30 | Base recipe |
| Medium-dark, Monsooned Malabar | Coarse | 1:15 | 3:30–4:00 | 88–91 °C; expect a lighter body than French press |
Naturals are the hardest coffees to keep on time in a Chemex. They shed more fines than washed coffees, and the thick paper traps those fines instead of letting them through. The bed slows, contact time stretches, and over-extraction shows up as dryness and a heavy, boozy finish. A coarser grind, slightly cooler water and fewer pours keep the drawdown inside the target. ICB's guide to pour-over for Indian naturals has the fuller parameter set.
Washed light roasts are an easier fit. Among the 67 washed light and light-medium pour-over coffees in stock, from 32 roasters, the most frequent notes are floral (14 coffees), honey (12), caramel and citrus (10 each) and black tea (9). Delicate notes like these are easier to pick out in a cup with little oil and almost no fines.
Indian Coffees Roasters Suggest for Chemex
Iced Chemex: Alchemist suggests iced Chemex for one of its medium-roast naturals. The usual method is to brew hot directly onto ice in the carafe, replacing about 40% of the brew water with ice by weight, and to grind a step finer to make up for the smaller amount of hot water.
Water and grinder notes for Indian kitchens
Water. A clean cup makes water faults easier to taste. Municipal supply in many Indian cities runs two to six times above the SCA's brewing range, which flattens acidity. Straight RO water goes the other way, at 20–50 mg/L, and gives flat or sour cups even with the grind right. Blending RO with filtered tap water, or remineralising it, usually brings the water back into range. ICB's guide to Indian tap water and extraction has the city-by-city detail. Hard water also leaves a white scale on the glass; a rinse with diluted citric acid or vinegar removes it.
Grinder. The most common cause of a stalled Chemex in an Indian kitchen is a mixer grinder. A blade produces dust alongside coarse chunks. The dust settles onto the thick paper and chokes the flow, while the chunks under-extract, so the cup comes out bitter and sour at once. A burr grinder matters more on a Chemex than on a French press or AeroPress, which tolerate fines better. Without one, pulsing coarse and shaking out the dust through a tea strainer helps, as does buying coffee ground to order for pour-over. ICB's guide to coffee grinders compares burr and blade, manual and electric.
Chemex vs V60
| Chemex | Hario V60 | |
|---|---|---|
| Filter | Bonded, heavy, three layers at the spout | Thin cone paper |
| Grind | Medium-coarse to coarse | Medium-fine |
| Typical batch | 2–4 cups | 1–2 cups |
| Cup | Very clean, lighter, tea-like body | Clean, slightly more body |
| Sensitivity to pour technique | Lower | Higher |
| Indian price (Oct 2026 listings) | About ₹4,500–7,100 | About ₹500–2,500 |
| Paper cost per brew | About ₹9 | About ₹2–6 |
Both are paper-filtered percolation brewers, and both remove most of the coffee's oils. ICB's guide to coffee filters covers how paper thickness changes body and flow. People who want a carafe and a lighter cup tend to choose the Chemex; people brewing single cups who want more control tend to choose the V60.
Troubleshooting your Chemex
| What you notice | Likely cause | What to change |
|---|---|---|
| 500 g drains in under 3:00; sour, thin | Grind too coarse, or thin non-Chemex paper | Grind finer; use bonded papers |
| Runs past 5:00 | Grind too fine, or fines from a blade grinder | Grind coarser; sift out dust; check the grinder |
| Stops mid-brew with water still in the cone | Paper has sealed the air channel | Lift the filter edge; seat the thick side at the spout |
| Bitter, drying finish | Over-extraction, often with naturals | Grind coarser; drop to 90–92 °C; shorten the bloom |
| Papery taste | Filter not rinsed enough | Rinse with more hot water; try white papers over natural |
| Flat, dull, but drawdown is on time | Water too soft (straight RO) or too hard | Blend RO with tap, or remineralise |
Change one variable per brew, starting with grind, and judge each change by drawdown time first and taste second.
References
- Museum of Modern Art — Peter J. Schlumbohm, Chemex Coffee Maker, 1941
- Lemelson-MIT Program — Peter Schlumbohm
- Prima Coffee — Comparing Chemex Recipes
- Specialty Coffee Association — Coffee Standards