Monster Guts

Monster Guts is an item found in

Uses
Monster Guts are the primary ingredient for the Purple Potion in A Link Between Worlds. Link can bring the Witch ten of these monster guts and she will brew him up a serving of purple potion, assuming Link has the rupees required as well.

Location
Monster Guts can be found across both Hyrule and Lorule. Monster guts are not actually an item, but a spoil. They can be found in chests. However, the primary method of acquiring monster guts is by receiving them as a drop from various enemies. Nearly every enemy has a chance of dropping monster guts, along with Monster Horns and Monster Tails.