The most exclusive process in the processing of Acquerello is the replenishment of the gem which has been patented. The bud is the vital part of rice, the embryo of the new plant that contains the most precious nutrients of rice, in particular mineral salts and vitamins.The patent consists in reintegrating the bud, (after having separated it from the chaff) to the grain of rice with a simple and mechanical method of mixing and slow rubbing between the rice and the bud to obtain the complete resorption of the bud in the external part of the grain. In doing so, the white rice grain retains the most precious nutritional properties otherwise contained only in brown rice. Carnaroli variety Long Grains A. Length: mm7 Shape: Semi-tapered Pearl: Extended