In order to do so just add the same amount of ingredients to the left and right slots.
Cooking this way will last n times longer, will give n times more experience, and will result in n times more cooked foods/potions, where n is the number of initial ingredients.
-Improved how ingredients are marked on the recipe list so it is now clear which potions a player can cook.
-Fixed a bug where the recipe list would not check for ingredients stored in a player bag.

Changed files in this update