YOUR OWN EDIBLE PHOTO CUSTOM PRINTING. Edible Ink - Ingredients Gluten free ~ Nut Free ~ Lactose Free~ Suitable for Vegans & Vegetarians. Demineralised water, Glycerine, Citric Acid E330 E405 Potassium sorbate E202 Valium sorbate E202 Ponceau E124 Colours: E151 E101 E104 E131.