Tarte aux poireaux

topping 68.5%: cooked leeks 20%, crème fraîche (contains milk), water, eggs 6.5%, white cheese (contains milk), emmental (contains milk) 2.5%, wheat flour (contains gluten), potato starch, salt, dextrose, aromas, paprika, pasta 31.5%: wheat flour (contains gluten), water, rapeseed vegetable oil, eggs, rice flour, lactose and milk protein (contains milk), skimmed milk powder, salt,