GU Stroopwafel The new GU Energy Stroopwafel was created for daily use before and during training and competition. The Stroopwafel delivers all the nutrients needed to power your performance - quality carbohydrates, essential amino acids, and electrolytes to replenish what you lost through sweat. The Stroopwafel is made with a layer of delicious syrup between two thin wafers, and is individually packaged to make it portable and easy to take on a ride or run. The Salted Chocolate and Wild Berries are gluten free. Wild Berries and Caramel Coffee contains 20mg of added caffeine.