2 medium leeks, trimmed, sliced thinly
100²µ/3½´Ç³ú plain flour, plus extra for rolling
freshly ground black pepper
pinch sea salt flakes
100²µ/3½´Ç³ú wholemeal flour
125g/4oz cold butter, cubed
knob of butter
50g/2oz butter
50g/2oz mature cheddar, finely grated
300ml half-fat crème fraîche
1 free-range egg, beaten
3 free-range eggs, beaten
100²µ/3½´Ç³ú fresh brown crab meat
100²µ/3½´Ç³ú fresh white crab meat