When one pot of rice is hard and the next is wet, start by checking what you measured and when you started the timer. This guide helps you investigate Japanese short-grain white rice without changing several things at once. For a complete cooking sequence, use the companion stovetop rice recipe.
Correction: The previous guide gave water quantities that differed from our companion recipe without a verified basis for the difference, and incorrectly explained polishing percentage. Those claims have been removed. The worksheet below is editorial guidance for recording your own cooking results, not a claim that Today’s Chef has tested every rice variety or pot.
First, put a unit beside every number
A cup is a container size, while a gram measures mass. Neither tells you the other without information about the ingredient. Zojirushi specifies approximately 180 ml for its rice measuring cup. That is different from many kitchen measuring cups. Check the markings instead of assuming that all cups match.
| What the instruction says | What to measure | Mistake to avoid |
|---|---|---|
| 300 g dry rice | Rice on a tared kitchen scale, before rinsing | Weighing soaked rice, which includes absorbed water |
| Two 180 ml rice cups | Two level cupfuls of dry rice | Using an unmarked mug or heaped cup |
| 400 ml cooking water | Water in a graduated jug | Including discarded rinse water in the total |
| A ratio by volume | The same volume unit for rice and water | Multiplying grams of rice by that ratio |
The companion recipe uses 300 g dry rice and 400 ml cooking water. Keep those quantities together as one starting method. Do not take water from one recipe, the soak from another and the timing from a third, then expect the combined method to behave like any of its sources.
Check the method before blaming the bag
Different published methods can legitimately use different stages. For example, Kikkoman’s white-rice method specifies 360 g rice with 480 ml water, a 30-minute soak, a 15-minute low-heat cook and a 15-minute rest. Its numbers belong to that method; they are not evidence that every other rice recipe needs those same timings.
Keep package instructions with the rice bag, especially when switching to brown or rinse-free rice. For a rice cooker, use the supplied cup, water markings and the appropriate program. Zojirushi’s manual notes that texture can change with rice variety, storage, temperature and cooking setting. A harvest date alone does not establish a precise water correction.
A short troubleshooting worksheet
Make a note of the symptom after the rest. Then inspect the record below before making another pot. These are investigation prompts rather than a diagnosis of every possible failure.
| Observation | Check first | Next comparison |
|---|---|---|
| Firm throughout | Dry-rice amount, measured water and whether the intended soak happened | Correct any missed step before increasing water |
| Soft throughout | Extra water left after rinsing or an incorrectly sized cup | Repeat with accurately recorded amounts |
| Scorched bottom, different texture above | Which burner and pot you used; when low heat began | Record heat changes separately from water changes |
| Water remains at the timed check | Whether timing began at boiling or at switch-on | Follow the recipe’s water-check instruction |
For each batch, record rice type, dry quantity, cooking water, soak duration, pot, burner setting, minutes after boiling, rest duration and result. Under “next change,” write just one action. A note such as “cup was unmarked; measure the dry rice by weight next time” is more useful than “use less water.” Keep the record even when a batch succeeds, so you can repeat it.
Separate texture from safe storage
A soft or firm texture does not tell you whether leftover rice was stored safely. Follow the Food Standards Agency guidance: cool promptly, ideally within one hour; refrigerate no longer than one day or freeze after cooling; reheat once until steaming hot throughout. Record the cooking date and time on the container rather than relying on memory.