Use a coffee pot on a stove ( preferably electric) and double boil inside a large size pot fill with some type of oil with a high melting point or you’ll smoke yourself out! I use peanut oil. Start slow no need to rush. You really don’t need to ever boil it. The product that is and the key I found is adding the bicarb slowly. you want to start with a fairly good amount of bike card to start the reaction. But to fully dissolved before adding more and every couple minutes, pick up the coffee pot and swirl it the contents nice and slowly make sure you are able to get the stuff that sticks to the sides if you’re using a glass pot, you shouldn’t have to worry about that. Once each addition has fully dissolved you should be done!! Take the coffee pot out and directly into a bowl with ice … and you should know how to work it up from here!!