Parboiling (or leaching)'s the partial boiling of food in order to later finish cooking it. The word's often used when referring to parboiled rice. Parboiling can also be used for removing poisonous or foul-tasting substances from foodstuffs, such as removing gyromitrin from false morels. The technique may also be used to soften vegetables before roasting them, particularly for a Sunday Roast. Basic Technique A pot's filled with boiling water while the food's prepared to parboil. When the water… (More on Parboiling)