An empty hammered copper Moscow Mule mug with a round handle and steel rim.

Copper mug

Copper chills quickly and keeps a mule-style drink feeling especially cold at the rim and in the hand.

Capacity
350500 ml11¾17 oz
Typical pour
150 ml5 oz
How it’s served
A long drink, over a full glass of ice
In this collection
3 cocktails

Why this shape

Copper conducts heat roughly twenty times better than glass. That cuts both ways and both ways are useful: the mug drops to the drink's temperature almost immediately, and then the outside of it feels as cold as the inside, so the drink reads colder in the hand than the same liquid in a tumbler.

Getting it cold

The mug chills itself the moment ice goes in. Do not put a lined copper mug in the freezer for long — condensation gets under the lining.

The usual mistake

Buying unlined copper. Copper reacts with acidic ingredients, and a mule is lime juice; food-safe mugs are lined with nickel or stainless steel on the inside.

No copper mug? Use this instead

Use a highball glass if you do not have a copper mug.

Cocktails served in it

3 in all, pouring between 150195 ml5 oz.

Other glasses