There are many approaches to modifying a glaze recipe, and different approaches can meet different needs. Some modifications change the colorant level while others change the colorant type altogether. Some may directly replace one material with another add a few weight unit more (or less) of one of the base ingredients in the recipe, or add an amount of an entirely new ingredient. These strategies we use to alter glazes tent to parallel how we cook and modify recipes in the kitchen, but adjustments to the base glaze using the kitchen method do not always give us the results we want. [excerpt