"For the best results, I highly recommend using platinum gelatin sheets for this recipe. If you are only able to find a different grade of gelatin sheet, you might have to tweak the gelatin/water ratio, or do a little experimenting to see what works best for the type you have. If you only have access to powdered gelatin, be aware that the bubbles will be cloudier and not as transparent. I've included brief instructions for making these with powdered gelatin in the Note below...."