Best rice for paella: bomba, senia, or arroz redondo?

One of the most common mistakes people make when cooking paella at home is using the wrong rice. Long-grain rice, basmati, parboiled rice — none of these will give you a proper paella. The type of rice you choose directly affects how the dish cooks, how the liquid is absorbed, and whether you can achieve socarrat. This guide explains the main varieties used in Spain and which one is best suited to different situations.

Why the rice matters so much

Paella rice is not just a vehicle for the other flavours — it is central to the dish. Unlike risotto, where the rice is stirred continuously to release starch and create a creamy sauce, paella rice must absorb liquid without releasing too much starch. The result should be individual grains that are fully cooked, flavourful throughout, and slightly firm at the centre — what Spanish cooks describe as al dente.

The starch structure of the rice determines how it behaves under heat, how much liquid it absorbs, and whether it keeps its shape or turns mushy. Short-grain varieties from the Valencia region have been selected over generations for exactly these qualities.

Bomba rice

Bomba (Oryza sativa var. japonica) is the most widely recommended paella rice, and for good reason. Its grains are shorter and rounder than most other varieties. Under heat, each grain expands outward — almost like a small accordion — rather than splitting or losing its shape. This means bomba absorbs more liquid (typically 3 parts liquid to 1 part rice) while remaining firm and separate.

Bomba is also more forgiving. Because it absorbs liquid more slowly and evenly, it is harder to overcook. If you add too much broth, bomba will keep drinking it without going mushy. This makes it the preferred choice for anyone learning to cook paella.

The main downside of bomba is cost. It is significantly more expensive than standard short-grain rice, reflecting the difficulty of cultivation and the smaller yields. If you are cooking paella regularly, this adds up. But for a special occasion, it is usually worth it.

Senia rice

Senia is arguably the most traditional paella rice — the variety that home cooks in Valencia have used for generations. It is smaller and more delicate than bomba, and it releases more starch during cooking. This gives senia rice a creamier texture and a tendency to absorb flavours more deeply.

The tradeoff is that senia is less forgiving. It overcooks easily, and experienced cooks often say it requires a more attentive hand. The window between perfectly cooked and too soft is narrower. But when it is right, many people prefer the result: more flavour, a more integrated texture, a paella that tastes less like rice-with-things-added-to-it and more like a unified dish.

Senia is also less available outside of Spain, though it can be found in specialist shops and online.

Arroz redondo (round rice)

Arroz redondo simply means "round rice" — a general category rather than a specific variety. It refers to any short-grain rice grown in Spain, often at a lower price point than bomba or senia. Some producers sell it generically; others label it by sub-variety (Bahía, Montsianell, etc.).

Quality within this category varies significantly. The best arroz redondo performs comparably to senia and is what many professional Spanish cooks actually use day-to-day. The worst is barely better than the supermarket rice you would buy for a rice pudding.

If you are buying arroz redondo, look for rice grown in the Valencia region (Denominación de Origen Arroz de Valencia) or the Ebro Delta in Catalonia. Provenance matters more than the varietal name in this category.

What about Calasparra?

Calasparra is a DO (denominación de origen) for rice grown in Murcia. It includes both bomba and a local variety called Balilla x Sollana. Calasparra rice tends to be high quality and is widely available outside Spain — you will often see it in delicatessens and import shops.

It behaves similarly to bomba: high absorbency, firm texture, forgiving to cook with. If you cannot find Valencia DO rice, Calasparra is a reliable alternative.

What NOT to use

Long-grain rice (including basmati and jasmine): does not absorb liquid the same way, stays too separate, and will never produce socarrat.

Risotto rice (arborio, carnaroli): releases too much starch, produces a creamy result rather than individual grains, and makes the dish taste like something between paella and risotto — and like neither particularly well.

Parboiled or instant rice: pre-cooked starches cannot absorb broth properly. The rice ends up bland and the texture is wrong.

The practical answer

For most people cooking paella at home: buy bomba. It is the most available, the most forgiving, and the most consistent in results. Pay for the quality — cheap bomba from an unknown source may not perform the same way.

If you want to explore further, try senia or a good arroz redondo from a reputable Spanish producer. The differences are real and worth understanding, especially if you are developing a serious interest in the dish.

In our paella cooking class in Barcelona, we cook with bomba rice sourced from Valencia. Students regularly comment that it is the first time they have understood what the rice is supposed to feel like — both while it is cooking and when it arrives on the plate.

Rice to Meet You offers paella cooking classes in Barcelona's El Raval neighbourhood, small groups of up to 12, all levels welcome. Book your spot →