I've been on a gluten-free diet for a year and a half so unless it's a cake order guess who gets indulge? Yup, my family and I. So when possible, it's going to be a gluten-free cake. In the video I used Bob Red Mills All Purpose Gluten Free Flour. The flavor of that particular brand of flour isn't my favorite, but the coffee simple syrup truly takes it to an entirely different level and knocks out any odd flavors.