a vegetable protein crumble for use as a meat extender to replace portions of lean and / or fat is made from one part soy protein isolate hydrated in about 3 . 5 - 5 . 0 parts water at ambient temperature and then chopped . a vegetable protein and / or complex carbohydrate is added to the resulting mixture , and again chopped . then the resulting composition is cooled overnight before being chopped or ground into crumbles . by way of example , a use of the crumble is described as a meat extender in pepperoni .