



As of 2014 it comprised 60 percent of plant-milk sales and 4.1 percent of total milk sales in the US. In 2013, it surpassed soy milk as the most popular plant-based milk in the US. In 2011 alone, almond milk sales increased by 79%. In the United States, almond milk remained a niche health food item until the early 2000s, when its popularity began to increase. For example, a thin split-pea puree, sometimes enriched with fish stock or almond milk (produced by simmering ground almonds in water), replaced meat broth on fast days and almond milk was a general (and expensive) substitute for cow's milk. But the most basic dishes were given in fast-day as well as Meat-day and fish-day recipes were not separated in medieval recipe collections, as they were in later, better-organized cookbooks. Medieval cookbooks suggest that the aristocracy observed fasting strictly, if legalistically. Historian Carolyn Walker Bynum notes that
