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Fluffy rice, perfect buckwheat and al dente pasta: water ratios and the main mistakes

Why rice goes sticky and buckwheat turns to mush, and how to fix it: how much water for each type, why you rinse rice and toast buckwheat, how much salt goes in pasta water and why you shouldn't add oil to it.

5 min readUpdated: 26 September 2026

Why grains stick

The surface of rice and buckwheat grains carries fine starch dust. In boiling water it turns into a glue that binds the grains together. The second cause is too much water and stirring: grains rub against each other, the outer layer cracks and starch leaks out.

So the rules are simple: rinse, measure water accurately and don't stir. Porridge and risotto are the opposite — there you want the stickiness, so the grain isn't rinsed.

Rice: rinse until the water runs clear

Cover the rice with cold water, swish it with your hand and pour off the cloudy water. Repeat 4–6 times until the water is almost clear. This washes off excess starch so the grains don't glue together.

For pilaf and side dishes you can also fry the rinsed, drained rice in oil for 1–2 minutes until the grains turn translucent. Each grain gets a thin film of fat and is sure to stay separate.

  • Long-grain white rice — 1 : 1.5 (1 cup rice to 1.5 cups water).
  • Basmati and jasmine — 1 : 1.25–1.5.
  • Short-grain rice for sides and sushi — 1 : 1.1–1.2.
  • Brown rice — 1 : 2–2.25, cook 35–40 minutes.

Why you shouldn't lift the lid

In the last minutes rice cooks in steam, not water. When you lift the lid the steam escapes, the temperature drops, and the top layer stays hard while the bottom burns.

The 10-minute rest after cooking matters too: moisture spreads evenly, so the grains aren't wet on top and hard inside. After resting, fluff the rice with a fork, not a spoon — a spoon crushes the grains.

Buckwheat: toast it and don't stir

Pick over and rinse the buckwheat, and let it drain. Then toast it in a dry pan for 3–5 minutes, stirring, until it smells nutty. Toasted buckwheat stays fluffy and tastes noticeably better — it's the classic way to cook it as a side for meat.

Pour boiling water over it at 1 : 2 by volume, salt, cover and cook on the lowest heat for 15–18 minutes until the water is fully absorbed. Take off the heat, add a knob of butter and wrap the pan in a towel for 10 minutes.

Pasta: plenty of water, plenty of salt

Pasta needs room: about 1 litre of water per 100 g. In a small pot the water takes ages to return to the boil, the pasta dumps all its starch into the cramped pot and sticks together.

Salt the water noticeably — about 10 g per litre. Pasta only absorbs salt while it cooks; you can't season it from the inside afterwards. The water should taste like a lightly salted broth.

Stir the pasta for the first 1–2 minutes after adding it — that's when it sticks to the bottom and to itself. After that, stir now and then.

Al dente and sauce: drain early

Al dente is pasta that's already soft but still slightly firm at the centre. If you're finishing it in the sauce, drain it 1–2 minutes before the packet time: it will finish in the pan and soak up the sauce's flavour.

Before draining, scoop out a mug of pasta water — its starch binds the sauce. Don't rinse the pasta: you'll wash off the starch and the sauce will slide off. Only noodles for cold salads and Asian dishes are rinsed.

Oil in pasta water is a myth

Oil doesn't mix with water — it just floats on top. It does almost nothing to prevent sticking, but when you drain the water, a thin film of oil coats the pasta, and the sauce clings less. Put the oil in the sauce, not the pot.

Storing and reheating

Cool cooked rice and refrigerate it within an hour or two — rice left warm for long isn't safe. Keep it no longer than a day and reheat it until piping hot.

Day-old rice is ideal for fried rice: dried-out cold rice doesn't clump in the pan. Frying fresh rice? Spread it thinly on a tray and let it cool and dry for 20–30 minutes.

Reheat buckwheat and pasta with a spoonful of water under a lid — the steam brings back their softness.

Common mistakes

What ruins a side dish most often:

  • The rice wasn't rinsed — it went sticky.
  • Water was added 'by eye' — mush instead of fluffy rice.
  • The rice was stirred while cooking and the lid was lifted.
  • It came off the heat without the 10-minute rest.
  • Pasta was cooked in a small pot in unsalted water.
  • Oil went into the pasta water, and the cooked pasta was rinsed.

Questions and answers

How much water per cup of rice?+

For long-grain white rice, 1.5 cups water per 1 cup rinsed rice. Basmati 1.25–1.5, brown rice 2–2.25.

Should I rinse rice?+

For sides and pilaf, yes — until the water runs clear, so it doesn't stick. For porridge, risotto and soup, no — you want the starch there.

How much salt goes in pasta water?+

About 10 g per litre — roughly a level tablespoon for 2 litres.

Should I add oil to pasta water?+

No. It doesn't stop sticking and it keeps sauce from clinging to the pasta. Just stir the pasta during the first two minutes.

Try it in practice

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