Parboiled rice is rough rice (rice with the inedible outside hull intact) soaked in warm water under pressure, steamed and dried before milling. The procedure gelatinizes the starch in the grain and results in firmer more separate grains. Parboiled rice can be milled to produce a brown or white rice. Two cups of uncooked parboiled rice cooks in 20 to 25 minutes yielding 3 to 4 cups. Often used by food service industry because the kernels hold their shape for a long period of time.