Cheese and crackers can be anything from a stack of thin wafers and shavings from the family block of Edam, to a carefully curated array of hard, soft, sharp and mild cheeses with gourmet crackers ...
Stir in the cheese, mustard powder ... then leave to cool on the tray. Freeze the butter and grate it into the pastry to make it easier to rub in while keeping it really cold.
Put on a tray, cover with cling film and leave to prove again for another 20 minutes. Preheat the oven to 240C/220C Fan/Gas 9 and preheat two pizza stones or heavy baking trays (baking trays are ...