I didn't use a blender. Whisking it in a glass mixing bowl was fine. The batter is thick, and at first it didn't want to stick to the fish (Tilapia), but just a little coaxing covered the pieces nicely. I used the exact ingredients as shown, but my wife will probably tell me to leave out the cayenne next time. And there WILL be a next time! I didn't make it in tacos, since I usually don't care for seafood tacos. A big Thank You to whomever created this.