Since there is a cap to how many of each item you can carry with you, it's good to save materials for crafting in a middle of a dungeon if you so happen to need more healing serums. Many of the recipes below require items made from other recipes. There are currently 34 recipes in total that you can unlock over the course of the game, but that can take a lot of time just flipping through the slow menus to figure out what each of them are.