I was wondering if there's recipe for something like a seasoned tempura mix that I can make ahead and store. Ideally, I would simply add water, soda, or beer until I got the right consistency, dip in whatever was to be fried and end up with a light, crisp, tasty fried whatever.
Aside from flour, salt, pepper, garlic powder, and maybe some dried parsley flakes (do these actually add more than flecks of color?), what do you suggest I add, and in what proportions? Cornstarch? Rice flour? Wondra? Powdered eggs? Paprika? Baking powder?