26+ Natural Blue Food Coloring UK. Red cabbage and baking soda. Cooked red cabbage leaves will eventually turn bluish.
Red cabbage and baking soda!
If you want to try it yourself (do it!), read on for our best tips and recipes. Believe it or not, they're both made using purple cabbage. They come in many forms consisting of liquids, powders, gels, and pastes. Natural blue food coloring is easy to make at home.you only need 2 ingredients: