Hard ginger nut biscuits are a classic British treat that are perfect for dunking in tea or coffee. These biscuits are crunchy on the outside and have a warm, spicy flavor from the ginger. They are made with a combination of flour, sugar, butter, and ground ginger. The dough is rolled out and cut into rounds before being baked until golden brown. These biscuits are great for snacking or for serving to guests with a hot beverage.