Cauliflower Cheese

Cauliflower (48%), semi skimmed milk, extra mature Cheddar cheese (milk) (10%), mature Cheddar cheese (milk) (7%), water, single cream (milk), maize starch, white onion, butter (butter (milk), salt), fortified wheat flour (wheat flour, calcium carbonate, iron, niacin, thiamin), salt, tapioca starch, mustard powder