Yeti Fazenda Brewing
Drip Bag Coffee: How to Brew It Properly
Drip bags, the little paper pouches with cardboard arms that hook over the rim of a cup, are everywhere in Japan. You find them in convenience stores, hotel rooms, gift boxes and the counters of tiny independent roasters. They sit somewhere between instant coffee and a full pour-over: real ground coffee, brewed through paper, with almost no equipment. Done carelessly they taste thin. Done well they can be surprisingly lovely.
What is inside a drip bag
A typical drip bag holds 8 to 12 grams of medium-fine ground coffee inside a non-woven filter. The cardboard or paper wings fold out and hang on the cup. Better bags are nitrogen-flushed and sealed in an outer foil pouch to slow staling, because ground coffee loses aroma quickly once exposed to air.
Many small roasters pack their own house blends into drip bags so customers can try several blends without buying a full bag of beans. Tasting sets of five different blends, one bag each, are a popular gift for exactly that reason.
What you need
- A drip bag
- A cup or mug at least 200 ml, ideally with a wide, sturdy rim
- Water just off the boil, around 88 to 94 °C
- A kettle you can pour slowly from (a gooseneck helps but is not essential)
- Optional: a kitchen scale
Step by step
- Warm the cup. Rinse it with hot water and discard. A cold mug steals heat from a small brew.
- Open and settle. Tear the top along the perforation, give the bag a gentle shake so the grounds sit flat, and hang it on the cup.
- Bloom. Pour about 20 ml of water, just enough to wet all the grounds, and wait 20 to 30 seconds. You will see the coffee puff up as carbon dioxide escapes. Fresh coffee blooms more.
- Pour in stages. Add water in three or four small pours, keeping the level below the top of the filter. Let each pour drain partly before the next. Total water for a 10 g bag is usually 130 to 160 ml.
- Remove the bag once it has drained. Do not squeeze it; squeezing pushes bitter fines into the cup.
Total time is roughly two to three minutes.
Common mistakes
- Flooding the bag. Pouring all the water at once overflows the filter and lets water bypass the grounds, giving a weak, watery cup.
- Too much water. A drip bag is not a large mug of coffee. If you want more, use two bags.
- Boiling water on dark roasts. Very hot water can pull harsh bitterness from dark roasts. Let the kettle rest 30 seconds.
- Shallow cups. If the bag sits in the brewed coffee, it steeps instead of filters. Choose a taller cup or lift the bag slightly.
Tuning the taste
| If your cup is… | Try… |
|---|---|
| Weak or sour | Less water, slower pours, hotter water |
| Bitter or harsh | More water, slightly cooler water, faster pours |
| Flat | Fresher bags; check the roast date |
Drip bags for milk drinks
Use about 100 ml of water for a concentrated brew, then top with warm milk. A medium-dark blend works best; light roasts can taste sour against milk.
Storage and freshness
Even sealed bags are best within a few weeks to a couple of months of roasting. Keep them cool, dry and out of sunlight. Avoid the refrigerator, where moisture and odours can creep in.
Why they make good gifts
Drip bags are light, need no equipment and let the recipient taste several coffees. A small set from a local roaster says more than a generic gift card, and it lets someone discover what they enjoy without committing to a full bag of beans.
A good drip bag will not replace a carefully made pour-over, but it can come impressively close. Treat it with the same patience, and it rewards you.
Written for the Yeti Fazenda Coffee Journal, an independent coffee resource. More from the journal →