Ingredients

375g/13oz plain flour

pinch salt

225g/8oz butter, diced

150 g/5½oz mature cheddar cheese

50g/1¾oz freshly grated parmesan cheese (or a

similar vegetarian hard cheese)

pinch English mustard powder

small pinch cayenne pepper

2 free-range eggs, yolks only

Preparation

1. Sift the flour and a pinch of salt into a bowl. Using your fingertips, rub in the butter until all the lumps are gone and the texture is like fine breadcrumbs. Stir in the cheese, mustard powder, cayenne, and egg yolks. Add 4-5 tablespoons of cold water and mix to a firm dough. Wrap in cling film and chill in the fridge for 30 minutes.

2. Preheat the oven to 190C/375F/Gas 5. Line a baking sheet with baking parchment. Roll out the dough to a square, roughly 1/4 inch thick. Cut 1/2 inch strips.

Bake 10 - 15 minutes. cool on tray.