I can either not afford so many Kosher products especially for Pesach or it is not available like in St Albans. I just check the incrediences. If none of the grains or gluten warnings are in it is OK for me. I am just sceptical with things like cheese. It is often made with wheat. There are always products that guaranteed gluten free and I always check what is really in it. Just following the basic law avoid fermented wheat, oats, rye, barley and spelt is all one has to follow.