Not sure it's sold anymore. You can probably process granulated fructose in your food processor or blender to get to a powder-like consistency. But granulated fructose has very fine grains so you can probably use it as is in the recipe. You can also substitute other sugars or sweeteners. But, as I recall, fructose has LESS sweetening power than sucrose (standard sugar) so you will need to adjust the quantities to avoid an over-sweet result.