6-cup Chemex coffeemaker
Chemex filters
3 bags of Ethiopia

Chemex 6-cup Coffeemaker Brew Guide

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The Chemex 6-cup Coffeemaker showcases an art museum-worthy hourglass design and thick paper filters that result in high clarity pour overs.

Featuring durable Borosilicate glass and double bonded paper filters, the Chemex is an ideal choice for home brewers who appreciate beautifully simple design and silky brews at a slightly larger brew volume than many pour over methods.

Recommended Brewing Parameters

Brewing Volume: 16 - 30 fl oz

Coffee Brewing Ratio (Grounds:Poured Water): 1:16 - 1:15

Grind: Medium-Coarse

Brewing Time: 4 - 5 minutes

Brewing Temperature: Set Kettle to 205℉ 


1. Think about how much coffee you'd like to brew (16 - 30 fl oz). The equivalent amount of Poured Water will be around 500 - 1000g. Begin heating this amount of water and just a little more, ideally in BonaVITA Variable Temperature Kettle.

2. Divide your Poured Water number by 15 for a stronger cup and 16 for a silkier cup (or anywhere in-between the two Coffee Brewing Ratios) to figure out how much ground coffee you should use. Grind this amount of fresh, wholebean coffee medium to medium-coarse (about the size of sea salt). 

3. Gently set one Chemex folded paper in the brewer with the double folded side facing the spout, then set on a scale and tare to zero.

4. Weigh out your ground coffee dose and re-tare to zero. When your kettle is at 205℉, you are ready to pour in three stages.

5. Start a timer and begin pouring slowly from about four inches above the bed of grounds, right into the center. Your pour should be straight up-and-down and move in slow, concentric circles roughly the size of a silver dollar. If your pour has an arc, then you are likely pouring too quickly. The amount of your first pour is determined by multiplying your dose times two. Ex. Dosed 30g of ground coffee? Your first pour should be 60g of water.

6. At 0:45 seconds into brewing, begin your second pour. Maintain the same pouring dynamics as above, but this time, pour until you are 2/3rds of the way through with your Poured Water amount. Ex. Pour to 400g on the scale if your total Poured Water will be 600g at finish.

7. At 2:30 minutes into brewing, begin your third and final pour. This time, begin by pouring around the rim of the Chemex's filter, drawing all coffee grounds down into the slurry. Once done, resume your centered pouring dynamics as described in #6. It is very important you stop pouring when your pre-determined Poured Water amount has been reached.

8. Note what time the coffee finishes dripping out - it should be around 4 - 5 minutes. If the brewing finishes earlier, consider whether your pour was slow and steady enough. If your pour was slow enough, you likely need to grind a little finer. Be careful when removing the filter as the grounds are still very hot!

9. Smell and once it cools enough, taste the brew. Little Waves coffees should exhibit a nice sweetness (like honey, caramel, ripe fruit), a moderately intense aroma, and medium-full body with a balanced mouthfeel. 

10. If the coffee tastes overly bitter, consider coarsening your grind one notch. If it tastes overly sour, consider fining your grind one notch. If it feels weak, consider using a slightly stronger Coffee Brewing Ratio. If the coffee feels strong, consider using a slightly weaker CBR (always within the 1:16 - 1:15 range).

11. Most importantly, enjoy your freshly brewed coffee!

* If when you are brewing, your coffee is only dripping out of the filter, check to see if the filter has sagged into the spout, which will create a vacuum effect and limit the out flow rate. To fix, simply pull the filter gently out of the spout and reseat so that it isn't sagging.