Ginger biscuit Recipe | Food Network UK

Ingredients

• 315g plain flour
• 1 1/2 teaspoons ground ginger
• 1 1/4 teaspoon bicarbonate of soda
• 1 teaspoon ground cinnamon
• 1/2 teaspoon ground allspice
• 1/2 teaspoon mustard powder
• 1/2 teaspoon fine salt
• 5 twists of freshly milled black pepper
• 170g unsalted butter, at room temperature
• 45g dark brown sugar
• 110g caster sugar, plus more for rolling the cookies
• 1 large egg yolk
• 1 teaspoon pure vanilla extract
• 125ml treacle
• 2 tablespoons ginger preserves (see Cook's note)