Leche merengada is a sweet, chilled Spanish drink that combines milk and whipped egg whites. The milk is heated and often flavored with lemon zest and cinnamon before it is chilled and combined with whipped egg whites. Merengada is then semi-frozen, and the final result is a refreshing combination that has a texture similar to a milkshake or a slushie, while some versions sometimes resemble ice creams.