Vanilla custard slices

custard filling 58% (water, sugar, full cream milk powder, acetylated distarch phosphate, gelling agents (sodium phosphates, diphosphates, calcium phosphate), thickener (sodium alginate), preservative (calcium propionate), flavouring, colour (annatto)), fondant icing (sugar, water, glucose syrup, palm oil), fortified wheat flour (wheat flour, iron, thiamin, nicotinic acid, calcium carbonate), vegetable oils (palm, rapeseed), water, sugar, glucose syrup, salt, emulsifier (mono - and diglycerides of fatty acids), flavouring, preservative (potassium sorbate), acid (citric acid), colours (carotenes, annatto, curcumin)