Arun Colour Chem offers Custard Powder. Arun Colour Chem is an ISO 9001-2000 recognized company. Arun Colour Chem offers wide ranges of primary food colors, blended food colors, lake colors, caramel, drinking chocolate, vanilla powder, baking powder, essence and flavors etc. Custard Powder is a starch that has been colored yellow, sweetened and flavored so that when hot milk is added the starch will make not only thicken the liquid, as a starch is bound to do anyway, but to give it the right Colour, taste, and aroma for a custard-like sauce.