FunCakes Food Colour Gels are highly concentrated food colourings that are suitable for colouring batter, creams, dough, icing, sugarpaste, marzipan and gum paste. Each tube contains 30g. Brown: glycerine, propylene glycol, colour: E102 (tartrazine), emulsifier: E551, colour: E122 (azorubine), E133 (brilliant blue FCF).