Rice
Also known as Oryza sativa, cooked rice, rice flour, Reis, riz, riso, arroz, ryż
A cereal filler in the blood and offal sausages of half of Europe, and a gluten-free alternative to rusk. Its state when weighed, raw or cooked, changes the formula by a factor of three.
Rice belongs to the blood and offal sausage traditions. It is the cereal in many Spanish morcillas, notably the morcilla de Burgos where it is the defining component, in the Hungarian hurka, in Polish kaszanka alongside or instead of buckwheat, in a range of Balkan and Baltic products, and in the Asian cured sausages in a different role. Its job is the same as rusk or groats: to absorb liquid and fat, to open the texture of an otherwise dense offal mixture, and to extend the meat.
What sets rice apart from the other cereals used this way is starch behaviour. Rice starch gelatinises when it is cooked with water, swelling and setting, and that gel holds moisture and fat firmly. In a morcilla the cooked rice grains stay visible and distinct, giving the characteristic speckled cut face and a texture that is loose and crumbly rather than pasty. Overcooked rice does the opposite: it breaks down, releases starch into the mix and gives a gluey pudding.
The practical trap is weighing. Rice roughly triples in weight when cooked, so a formula that says 200 g of rice means something quite different depending on whether the writer meant the dry grain or the cooked. Getting this wrong by a factor of three is not a subtle error, and it is the commonest failure with these recipes. The house habit is to state the state alongside the weight and to record which was measured. Where a recipe is ambiguous, the ratio of cereal to blood or offal in comparable traditional formulas is usually the fastest way to work out which was meant.
Rice flour is a different ingredient with a different job. It is a fine binder and thickener, it is used in the sugna paste that seals a drying ham, and it appears in gluten-free sausage formulations as an alternative to rusk. It does not give the visible grain that whole cooked rice does.
The one genuine advantage rice has over rusk and most other cereal extenders is that it contains no gluten, so it is the natural route for a coeliac-safe product. That advantage is only real if the rest of the formula and the production are also free of cross-contamination.
Rice belongs in cooked products. Like every cereal it brings water and a carbohydrate substrate, so it has no place in a dry-cured sausage.