Milk Surprising Science There Is No Such Thing As Soy Milk Got Milk? If you are holding a carton of Soymilk you don't. Right now there is a battle over what can be defined as milk, and what can't be. With milk sales going down and plant-based beverage sales going up, it could be an all-out war. Health Cockroach milk: The superfood of the future is now Researchers find an unlikely source for the next superfood.