How Long Should Different Pulses Be Soaked Before Cooking?

How long a legume needs soaking depends on the type: large legumes like chickpeas and dried beans need 8–12 hours, while small, hulled legumes such as red lentils can go straight into the pot with no soaking at all. Knowing the right time both shortens cooking and helps the grains soften evenly all the way through. What determines the soaking time? The main factor behind soaking time is a legume's skin thickness and size. Chickpeas and dried beans have a thick skin that slows how fast water reaches the inside, which is why they need an overnight soak — more than 8 hours. Larger bean varieties like borlotti beans need a similarly long soak, sometimes up to 12 hours. Smaller legumes like green lentils, or borlotti beans on the smaller side, can get by with 6–8 hours. Hulled red and yellow lentils skip soaking entirely, since the skin is already removed; they soften in boiling water in as little as 15–20 minutes and even begin to fall apart. Knowing these benchmarks makes it easier to estimate the right cooking time when trying a new recipe. Can you cook them without soaking at all? Chickpeas and dried beans can be cooked without soaking, but cooking time can increase to roughly twice as long and the pot needs to hold more water throughout. A pressure cooker makes unsoaked cooking more practical, since the pressure softens the skin faster; even so, some beans may still finish softening later than others. Why should the soaking water be changed? It helps to refresh the soaking water once partway through, ideally around the halfway point of an eight-hour soak; water left standing too long can start to turn sour, and that smell can carry through to the cooked legumes. The soaking water is never used for cooking — it's drained and replaced with fresh water, which both washes away some gas-producing compounds and leaves a cleaner taste. What signs should you watch for while soaking? By the end of soaking, the legumes should have swollen to nearly twice their size and feel slightly springy to the touch; grains that are still hard and small need more time. Some foaming or a faint smell on the water's surface is normal, but a sharp, sour smell means it's sat too long somewhere warm and the water should be changed right away. Any wrinkled grains floating on top are usually bad or infested and should be picked out and discarded. What about split peas or chickpea flour? Dried whole peas have a skin about as thick as chickpeas, so they need a similar 6 to 8 hour soak; split peas, with the skin already removed, only need 1–2 hours. Chickpea or lentil flour is already ground, so it needs no soaking at all — it goes straight into water for mixing. Forgetting that distinction and leaving a ground legume sitting in water for hours turns it into a paste that's no longer usable for most recipes.