for the cheesecake250â  gâ  crushed sweet biscuits ( melted 1/2â  teaspoonâ  cinnamon 1/2 teaspoon ground ginger 500â  gâ  cream cheese, room temperature 2 tablespoons brown sugar (notes) 2 teaspoons teaspoonâ vanilla extract 3â  large eggs, room temperature 200 mlâ  sour cream