Salt & pepper shortbread from A Whisper of Cardamom by Eleanor Ford

Ingredients

• Sea salt flakes, for sprinkling (optional)
• ½ teaspoon grains of paradise, ground (or more black pepper)
• ½ teaspoon black peppercorns, coarsely ground
• 150 g (1 cup) plain flour
• ¼ teaspoon fine sea salt
• 50 g (1¾ oz) caster sugar, plus more for sprinkling
• 100 g (3½ oz) unsalted butter, at cool room temperature