KetoAide is a calorie free electrolyte water
24 oz filtered water(or tap water)
1/4 teaspoon Morton’s Lite Salt
1/2 Tablespoon magnesium citrate
Mix well. [I shake up in two sports bottles] Refrigerate for best taste.
Magnesium citrate is sold at most drug stores in three flavors, lemon lime, grape, and cherry. Sweetened with saccharin. It adds a slight flavor to the Ketoaide. It is inexpensive at $1 per 10 oz bottle. [emphasis on slight flavor...don't expect soda ]
Use Lite Salt because it contains sodium AND potassium. Priced low at $2 per 11 oz. You could also buy “No Salt” which is all potassium, and add your own salt. Lite Salt and No Salt are sold at most large grocers.

Each bottle of KetoAide provides
290 mg sodium
350 mg potassium
75 mg magnesium

The Zorn fast recommends two of these bottles...but that depends on your need for electrolytes...but do not over-consume potassium, e.g. dont take potassium supplements plus this. Magnesium citrate is a laxative, but this is a small amount, it has had no effect on me. I like to drink water cold and have always kept some sports bottles in the fridge ready to drink. This adds some electrolytes without going overboard.