You can also search for items using the search area in the bottom right corner. To see what this item/block is used for, click the right mouse button. To see the craft recipies of a particular material, select the item from the right JEI menu, and click the left mouse button. What also makes the mod unique is its compatibility with any other mods, which means that you can see the craft recipes of any material that other mods add! Usage: It is done very easy to navigate through the craft recipes and the usages of items. Overall the mod is made to considerably easy the gameplay of any minecraft player and to help them save a lot of time. To do so, just press the + button below the craft recipe. One additional functionality the mod comes with is the ability to move the craft recipe directly to the crafting table (crafting table must be open for that).

Apart from that you can also know how particular potion is made.

Mod's main outstanding feature is showing you the craft recipies of any item/block you select, and see what they are used for. Just Enough Items mod adds a new awesome menu to the inventory panel, where you can browse all the items, blocks, weapons and etc.

Minecraft 1.11.2 not enough items