How to Cook Long-Grain Rice in a Rice Cooker

Long-grain rice cooks into separate, tender grains in a rice cooker with very little hands-on work. For a reliable result, rinse white rice, measure the water carefully, and let the cooker finish its cycle and rest before you open the lid. The method below is for plain long-grain white rice; brown rice and specialty varieties need different water amounts and cooking times.

What You’ll Need

1 US cup (185 g) long-grain white rice. This makes about 3 cups (600–700 g) cooked, depending on the variety and how much water it absorbs.
Water, measured using the guidance for your rice cooker and the rice quantity.
A rice cooker with its inner pot and lid. Use the supplied measuring cup if the manual specifies one.
A fine-mesh strainer or bowl for rinsing, and a spoon or rice paddle for fluffing.
Optional: ¼ teaspoon (1.5 g) salt, or a small amount of butter or oil for flavor. These are not required for cooking the rice.

Check the capacity markings and instructions for your specific cooker before starting. Many rice cookers include a cup that holds about 180 ml, which is smaller than a standard US measuring cup of 240 ml. Rice cooker cup markings on the inner pot are calibrated to that supplied cup, not necessarily to US cups. Use one measuring system consistently: measure rice with the cooker cup and fill water to its matching line, or measure both rice and water with standard US cups and follow the manual’s ratio.

Step-by-Step

Measure the rice. Choose the amount you need, keeping within the cooker’s minimum and maximum capacity. For a small batch, 1 US cup (185 g) dry rice is a useful starting point; for a larger batch, use 2 US cups (370 g). If using the cooker’s cup, remember that its volume may differ from a US cup. Level off the rice rather than packing it down so the measurement is repeatable.
Rinse until the water is less cloudy. Put the rice in a fine-mesh strainer and rinse under cool running water, gently moving the grains with your fingers. Or add water to a bowl, swirl the rice, pour off the cloudy water, and repeat several times. The rinse does not have to become perfectly clear. It removes loose surface starch that can make cooked rice sticky or foamy. Drain the rice well for about a minute; water clinging to the grains can affect the final texture.
Add rice and water to the inner pot. Transfer the drained rice to the cooker pot and add water. Start with the rice cooker manual’s instructions, because recommended ratios and markings vary. If the manual gives a ratio for long-grain white rice, follow that ratio. For a standard US-cup measure, a practical starting point is about 1½ US cups (355 ml) water for each 1 US cup (185 g) of rinsed rice. Some cookers do better with slightly less or more, so the first batch is a useful guide for your appliance.
Use the cooker’s water line when appropriate. If your pot has lines marked for white rice, measure the rice with the supplied cooker cup, then add water to the matching number. For example, with two level cooker-cups of rice, add water to the line marked 2. These lines usually refer to the cooker cup, not two standard US cups. Do not use the markings if you measured rice with a different-sized cup unless the manual says how to convert. If the cooker has no lines, use its recommended ratio and level the rice in the pot.
Season lightly, if you like. Add up to ¼ teaspoon (1.5 g) salt per US cup of dry rice, or leave it out if serving the rice with a salty dish. A small knob of butter or a teaspoon (5 ml) of neutral oil can add flavor, but neither is necessary. Stir once gently to distribute salt, if used, then spread the grains into an even layer. Avoid vigorous stirring, which can break grains and release more starch.
Close the lid and select the right setting. Wipe moisture from the outside of the inner pot, set it into the cooker, and close the lid securely. Choose the white-rice or regular setting. If your model has only a cook switch, start the cycle according to its instructions. Do not lift the lid while it cooks: opening it releases steam and can interrupt the cooker’s temperature and timing. Let the machine switch to warm or signal that the cycle is complete.
Let the rice rest in the closed cooker. Once the cook cycle ends, leave the lid closed for 10 minutes. This resting period lets moisture distribute through the grains, so the bottom is less wet and the top less firm. If the cooker automatically switches to warm, the rice can rest there. Do not leave it sitting on warm for hours if you want the best texture; prolonged warming can dry the edges or make the bottom crusty.
Fluff and serve. Open the lid carefully, directing steam away from your face and hands. Use a rice paddle or fork to lift and turn the rice gently from the bottom rather than stirring it into a mash. Serve while hot, or transfer leftovers promptly to a shallow container for cooling and refrigeration. Fluffing also lets extra steam escape, which helps keep the grains distinct.

Common Mistakes

Using the wrong cup size: A cooker cup is often about 180 ml, while a US cup is 240 ml. Measuring rice with one and water with the other changes the ratio substantially. Check the manual, use matching measures, or rely on the cooker’s lines only when you have used its cup.

Adding too much water: Rice that is wet, gummy, or clumped may have had excess water, or may not have drained well after rinsing. Follow the cooker’s chart first. If the rice is consistently too soft, reduce the water by 1–2 tablespoons (15–30 ml) per US cup of dry rice on the next batch, rather than making a large adjustment at once.

Adding too little water: Hard or chalky centers often mean the rice needed more water or a longer cycle. Check that you selected the correct program and that the lid sealed properly. Add a little more water next time; do not compensate by repeatedly opening the cooker during a cycle.

Skipping the rinse or drain: Unrinsed rice can be stickier because of surface starch. On the other hand, pouring wet rice straight from a bowl into the cooker can add an unmeasured amount of water. Rinse, then drain consistently.

Opening the lid too early: Steam is part of the cooking process. Checking the grains before the cycle ends can leave them unevenly cooked. Wait for the cooker’s signal, allow the covered rest, and only then inspect and fluff.

Cooking a different type of rice on the same settings: Brown rice, jasmine rice, basmati rice, and parboiled rice can differ in water needs and cooking time. Long-grain describes grain shape, not one universal recipe. Use the variety-specific instructions when available.

Tips

For separate, fluffy grains, use a consistent method and take notes after each batch. Record the rice variety, whether you used a cooker cup or US cup, the water amount, and the setting. If the result is a little too firm, increase water slightly next time; if it is too soft, decrease it. Change only one variable at a time so you can see what helped.

Rinsing is especially useful when you want distinct grains, but it is not always essential. Some packages recommend not rinsing because the rice has been fortified or processed in a way that calls for following the label. Check package directions, and avoid rinsing enriched rice if its instructions say not to, since some added nutrients can wash away.

If you are making a larger quantity, do not assume you can simply fill the pot to the top. Rice expands, and the cooker needs room for bubbling and steam. Stay below the maximum line and follow the manual’s batch limits. A very small amount may also cook unevenly in a large cooker, so check whether the appliance specifies a minimum batch.

For savory meals, plain rice is easy to adapt after cooking. Fold in chopped herbs, sliced scallions, or a small amount of toasted sesame oil once the grains are fluffy. You can also replace some or all of the water with broth, but account for its salt and flavor. Adding ingredients such as vegetables or raw meat changes how heat moves through the pot; use a cooker recipe designed for those additions rather than treating them as simple seasonings.

Store cooked rice safely: refrigerate it within 2 hours in a shallow, covered container, and use it within 3–4 days. For longer storage, freeze it in meal-sized portions. Reheat leftovers until steaming hot and at least 165°F (74°C), as measured with a food thermometer. Do not leave cooked rice at room temperature for an extended period.

Troubleshooting

The rice is too wet or mushy. If the cycle has ended, fluff gently and leave the lid open for a few minutes to release steam; this may improve the surface, though very overcooked rice will not return to separate grains. Next time, drain rinsed rice more thoroughly and reduce water by 1–2 tablespoons (15–30 ml) per US cup. Also check whether you used a 180 ml cooker cup with a US-cup water measure.

The grains are dry or still firm. If the cooker has completed its cycle but the rice is not tender, sprinkle 1–2 tablespoons (15–30 ml) water over the rice, close the lid, and let it sit on warm for 5–10 minutes. If needed, run a short additional cook cycle only if your model permits it. For the next batch, increase the measured water slightly, verify the lid closes fully, and confirm that the rice is not old or a variety with different instructions.

The bottom is browned or scorched. A thin, lightly toasted layer can happen with some cookers, especially after a long warm hold. If the rice is badly scorched, unplug the cooker and let the pot cool before cleaning. Next time, serve soon after the resting period, shorten warm holding, and check the manual’s water guidance. Avoid scraping a burned layer into the rest of the rice, since it can give the whole batch a bitter taste.

Water bubbled out or foam collected under the lid. Too much water, excess surface starch, or an overfilled pot can cause foaming. Rinse the rice more thoroughly, drain it well, and stay within the cooker’s capacity. Clean the lid, steam vent, and condensation channel as directed by the manufacturer before using the cooker again.

The rice is uneven, with a wet top and dry bottom. Check that the pot sits flat on the heating plate and that the outside of the pot is dry. Measure accurately and spread the rice evenly before closing the lid. After cooking, keep the lid closed during the rest, then fluff from the bottom upward to distribute moisture.

Frequently Asked Questions

How much water should I use for long-grain rice in a rice cooker?
Start with your cooker manual or its white-rice water line, since appliances differ. If using standard US cups and there is no model-specific chart, about 1½ US cups (355 ml) water per 1 US cup (185 g) rinsed long-grain white rice is a reasonable starting point. Adjust slightly after seeing how your cooker performs.

Do I need to rinse long-grain rice?
Rinsing removes loose starch and often gives a less sticky result. Rinse in cool water until it is less cloudy, then drain well. Follow the package directions if they advise against rinsing, particularly for enriched rice.

Can I cook basmati or jasmine rice this way?
Both are long-grain varieties, but their preferred water amounts and textures can differ. Use the cooker manual or package guidance for the specific rice. Basmati is often soaked or rinsed for a distinct texture, while jasmine can be softer; treat those as variety-specific adjustments rather than assuming one ratio suits every grain.

Should I leave the rice cooker on warm?
A short covered rest on warm is convenient, but extended warming can dry the rice or create a firm layer at the bottom. For the best texture, serve it soon after the 10-minute rest. Refrigerate anything you will not serve promptly rather than holding it at room temperature.

Why is my rice sticky even when I measure carefully?
Some long-grain varieties naturally cling more than others, and extra water or insufficient draining can make that more noticeable. Rinse and drain consistently, use the correct cup size, and reduce the water modestly on your next batch. Fluff gently rather than stirring vigorously.

Can I double the amount?
Usually, if the cooker is rated for that quantity and you keep below its maximum line. Measure both rice and water in the same way as for a smaller batch, and do not assume the cooking cycle will take exactly twice as long. Check the rice after the cooker signals completion and allow it to rest before fluffing.

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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

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