JEI Primer

In order to play Hardcore Alchemy, you must know how to use JEI (Just Enough Items). JEI is used to look up how to craft items, as well as discover what recipes are associated with a particular ingredient or crafting block. Most, but not all, methods of acquiring items can be looked up in JEI.

JEI adds an Item List Overlay to the right of the GUI when your inventory is open. The Item List Overlay has most of the items in the modpack. At the top of the Item List Overlay, there are buttons to move between pages of items. At the bottom of the Item List Overlay, there is a Search Bar that allows you to search for specific items in the Item List.

JEI lets you look up recipes for any item in the Item List Overlay, as well as almost any inventory. To look up recipes, hover over the item and either click the item with the mouse, or press the appropriate JEI keybinding. Unfortunately, the default JEI keybinding for Show Item Recipe conflicts with the default Inventory Tweaks keybinding for Inventory Sorting. You can fix this by changing or removing the Inventory Sorting keybinding.

In the Controls menu, you should see keybindings for JEI. The "Show Item Recipe" keybinding will show Recipe Pages showing how to obtain that item. The "Show Item Uses" keybinding will show Recipe Pages showing how the item can be used as an ingredient or a crafting station. Keep in mind that the items within Recipe Pages can also be interacted with via JEI keybindings; this allows you to look up the entire recipe chain for an item. The "Show Previous Recipe Page" keybinding is useful to return to a previous Recipe Page after looking up recipes several times. The other JEI keybindings should be self-explanatory.

When you are at a crafting table, JEI can tell you what items are missing at a crafting table recipe, and can automatically fill out the shape of the recipe using items in your inventory.

Last but not least, JEI's Search Bar has a few hidden functionalities. For example, you can search @bloodmagic to search items from the Blood Magic mod. bloodmagic is the mod ID for Blood Magic. You can find mod IDs by toggling advanced item tooltips (F3+H) and hovering over an item from a mod. Every item has an item ID in the format, modid:internal_item_name. More complex JEI searches are also possible, for example stone moss | @bloodmagic axe. That searches for items matching stone moss OR @bloodmagic axe. The @ is a prefix which tells JEI to search something other than the item name. There are a few other prefixes, although they are less useful. If you are curious, you can learn about them by clicking on the button to the right of JEI's Search Bar.