This event is extended by all events involving the brewing stand, although not the player-based function for extracting items from the brewing stand.

It might be required to import the class to avoid errors.
import crafttweaker.event.IPotionBrewEvent;

The following information can be retrieved/set during the event:

ZenGetter	ZenSetter	Type
ZenGetter length	ZenSetter ​	Type int

• event.getItem(int) returns IItemStack on the given index in the crafting station. Will return an empty IItemStack if the specified index is greater than length.
• event.setItem(int, IItemStack) Replaces or sets IItemStack on given index. If the index is greater than the length of the item array, nothing will happen.