Source: Dungeon Master’s Guide

Wondrous Item, Uncommon

This ceramic jug appears to be able to hold a gallon of liquid and weighs 12 pounds whether full or empty. The jug sloshes when it is shaken, even if the jug is empty.

You can take a Magic action and name one liquid from the Alchemy Jug Liquids table to cause the jug to produce the chosen liquid. Afterward, you can uncork the jug as a Utilize action and pour that liquid out, up to 2 gallons per minute. The maximum amount of liquid the jug can produce depends on the liquid you named.

Once the jug starts producing a liquid, it can’t produce a different one, or more of one that has reached its maximum, until the next dawn.

Alchemy Jug LiquidsLiquid Max. Amount
Acid8 ounces
Basic Poison4 ounces
Beer4 gallons
Honey1 gallon
Mayonnaise2 gallons
Oil1 quart
Vinegar2 gallons
Water, fresh8 gallons
Water, salt12 gallons
Wine1 gallon