The Simple Ingredient That Will Make Your Milk Seem Like It's From A Galaxy Far, Far Away - Tasting Table
A few drops of liquid blue food coloring turn any milk into 'bantha' blue milk; coconut and rice milk with vanilla and sugar recreate park-style blue or green milk.
Fermentalg has identified Galdieria sulphuraria, a microalga that produces a pigment known as Galdieria blue, suitable for food applications and expected on shelves next year.