Cheese biscuits

1.Rub butter into flour with your fingertips in a bowl until mixture resembles fine crumbs (or combine in a food processor), then add parmesan and cheddar, season with a pinch of fine salt and mix to combine. Combine egg yolk and 25ml water in a bowl, add to flour mixture and bring together with your hand, then turn out onto a lightly floured surface and knead gently until smooth. Roll out to 20cm x 30cm between sheets of baking paper, then refrigerate to rest and chill (1 hour).

2.Preheat oven to 170C. Remove paper from dough and cut dough into rounds with a 4.5cm cutter and place on oven trays lined with baking paper. Season with sea salt flakes, mace and a very generous grinding of black pepper. Bake, swapping trays halfway through cooking and flipping biscuits so they brown on both sides, until golden (16-18 minutes). Set aside to cool. Biscuits will keep in an airtight container for 1-2 days. If they soften, refresh them in a warm oven before serving.