Pour-over coffee too bitter? Here is what to change

Bitter pour-over almost always means over-extraction, and the fastest fix is to grind coarser. Change one thing at a time, in this order: coarser grind, then slightly cooler water, then a shorter total pour time, then gentler pouring. Stop as soon as the cup tastes sweet. This works the same on a Hario V60 or a Kalita Wave.

What should you change first?

Grind size. Finer coffee gives the water more surface to pull from, so the cup gets harsh and dry. Move your grinder one or two steps coarser, brew again, and taste. Do this before touching anything else, because it fixes most bitter pour-overs on its own. If you want to understand why this happens, our post on why coffee tastes bitter explains it in plain terms.

What is the order of fixes?

The numbers are starting points, not laws. Your kettle, your grinder and your filter all change the result, so trust your cup more than the table.

Could it be the grinder and not the recipe?

Yes. A blade grinder or a worn burr produces a mix of dust and chunks. The dust over-extracts and tastes bitter while the chunks under-extract and taste sour, so the cup is both at once. If you change the recipe three times and nothing helps, the grinder is the next suspect. A consistent burr grinder fixes more bitter pour-overs than any recipe tweak.

If your cup is the opposite problem, thin and watery, read pour-over coffee too weak instead.

Which of our coffees is forgiving in a pour-over?

For a first pour-over, we would start with No. 7 Praxis. The label recommends brewing it twice, once at 60 g per litre and once at 70, and keeping whichever you preferred. That is a built-in way to dial in, and it works with any method. It is a washed Guatemalan with a medium roast and notes of dark chocolate, bright fruit and butterscotch.

If you drink your pour-over black and enjoy fruit, No. 2 Good Sense is labeled for pour-over at 60 g per litre, 94 °C (about 201 °F), with a 40-second bloom. It is a medium-light natural Ethiopian, and a natural goes to fruit, so the label says to drink it black. Neither coffee will fix a grind that is too fine, but both give you a clear target to taste against.

How do V60 and Kalita Wave differ here?

The fixes above apply to both, but the two brewers fail in slightly different ways. A V60 is a cone with one large hole, so the speed of the flow depends heavily on your grind and your pour. Grind too fine and it clogs and stalls, which is the classic way to get a bitter V60. A Kalita Wave has a flat bed and three small holes, so it drains more evenly and is more forgiving of uneven pouring. If you are new to pour-over and keep landing on bitter, the flat bed of a Kalita Wave is the easier place to learn.

In both, watch the drain time more than the clock on the recipe. A brew that finishes much later than three minutes is telling you the grind is too fine. A brew that finishes in under two is telling you it is too coarse, which is the point where it turns sour and thin instead.

Keep a note of each change you make. Pour-over is easy to fix when you only change one thing per cup, and impossible when you change three at once.

What does a pour-over look like after the fixes?

1. Rinse the paper filter with hot water, then discard the water.
2. Add 20 g of medium-coarse coffee for about 330 g (11 oz) of water, which is 60 g per litre.
3. Pour about 50 g of water, wait 40 seconds, and let the coffee bloom.
4. Pour the rest slowly in two or three stages, keeping the water level steady.
5. Aim to finish dripping at around 3 minutes. If it takes much longer, go coarser.

Pour-over is a method that rewards patience. For more on the method in general, see the return of hot pour-over, and for a recipe tied to one of our coffees, our Tanzanian pour-over guide. Every coffee is $28 for 12 oz, whole bean or ground, with free shipping in the US, and all ten coffees are one click away.

Change one thing, taste, and stop when it is sweet.