Cool Whip is a brand of imitation whipped cream named a whipped topping by its manufacturer. It is used in North America as a dessert topping and in some no-bake pie recipes. It was originally described as 'non-dairy' as it contained no cream or milk and no lactose; however, it did contain the milk derivative casein. In 2010 both skimmed milk and light cream were added to Original Cool Whip. Cool Whip was introduced in 1967 by the Birds Eye division of General Foods. Within two years of introduction, it became the largest and most profitable product in the Birds Eye line of products. Birds Eye later merged with Kraft Foods and Philip Morris, eventually becoming part of Altria Group until the spin-off of Kraft Foods from Altria in 2007. Cool Whip was invented by William A. Mitchell, a food chemist at General Foods Corporation.