It is used to strain custards, purees, soups, and sauces, producing a very smooth texture. The juices are a combination of flash pasteurized fruits, vegetable juices and purees. Instant and concentrated cooking ingredients such as pasta sauce, chicken broth, vegetable purees etc. Trimmings can be used for stocks, soups, purees, etc. Browning also occurs in apple juices and purees when poorly handled or processed. Purees of such fruits may also be used instead of the whole fruit itself. Some, like Welch's, contain some fruit purees . Most are made of whole fruit, though some kinds are made of pieces or purees. By the 1930s, a variety of Gerber purees were available for purchase.