Dense, washed coffees will take longer to drain than more fermented soluble coffees. Each coffee is different and thus you will get slightly (or sometimes vastly) different brewing times from coffee to coffee. This is okay! Use your taste to judge what type of cup you enjoy most.

USABLE: 12 grams to 28 grams
BEST RANGE: 16 grams to 24 grams

We pour with our standard 5 G/S or 50G in 10 seconds.

You could try to use more central pours on any of our recipes for this device, to promote faster drawdowns and brighter acidity.

We display grind size advice in Comandante C40 Clicks (as it is our preferred hand grinder) but we also refer to grind size ranges like FINE, MEDIUM-FINE, MEDIUM, MEDIUM-COARSE, COARSE. We recommend you take our base recipe (Easy does it) and dial your grinder in based on our time guides and on your taste. Every grinder will produce a different profile and will interact differently with the paper filter.

Our recipes are designed around light (or even often very light) roast levels. If you are brewing more developed medium or dark roasts, please note that you should adjust parameters. In general the darker you go, we would recommend to decrease grind size gradually and lower water temperature - adjust to taste. We have not tested with dark roasts too much as of yet, and may prepare a guide section specifically for this later on. Just keep in mind that we designed and tested this device more around light roast coffee.

All of our recipes start with a room temp device and this is fine. Please note that if you pre-heat the device, you may end up with a different cup profile than what we do when we create the recipe.

Our recipes below are a starting point. Please explore our V4, V3, Z1 Recipes, as most of them translate well to the O2. Adapt recipes from your favourite YouTubers, Brewing Champions, or local baristas - have fun and share your findings with us!