There is a concoction system in Island Troll Tribes involving a variety of herbs and ingredients found in various media, usually in a variety of Bushes. A Mixing Pot, or the inventory of a Herb Master Telegatherer is required in order to fuse these ingredients and process them into useful items.
Processing these ingredients requires specific combinations in order to generate desired items and potions. Some of these recipes aren't given in the game so it helps to know the ones you want. In this article, the coloured herbs are referred to as Special 1, 2, 3 or 4, where 1 and 3 are from diagonally aligned islands (and likewise for 2 and 4.) When herbs are added in excess of a recipe, they will still be destroyed in the making of the item.