A shipment leaving the factory is the least interesting part of a mug order. The interesting part happened three weeks earlier, at the polishing bench and on the inspection table. We get asked the same questions on every mule mug programme — what the mug is made of, what we check, how long it takes — so here is what actually happens between the purchase order and the cartons closing.
What a Moscow Mule Mug Has to Survive
The Moscow mule is a hostile drink for metal. Fresh lime juice is acidic, ginger beer is carbonated and slightly salty, and the drink is served over ice in a cup that is held in a wet hand. Anything on the inside of that cup is a drink-contact surface, which is why we specify 304 stainless steel as standard for the liner. It resists the acid, it does not pick up flavour between drinks, and it survives a commercial dishwasher without spotting.
The outside is where the look lives, and where most of the complaints come from. A copper finish has to survive handling, condensation and wiping without going patchy — and it has to do that while sitting over a steel liner that expands at a different rate when the drink is cold.
How the Mug Is Built: Liner, Shell and Finish
The liner is deep-drawn from 304 stainless steel sheet, trimmed, and the rim is rolled for a smooth lip. The shell is formed to match, the two are assembled, and the seam is welded and dressed back so there is no ridge inside. The body is then polished in stages — cutting, then colouring — because a copper finish shows every scratch left underneath it.
The handle is welded on after the body is finished, and the joint is inspected on every unit: it is the one place on a mug that can fail in a way the customer notices immediately. Copper finishes are electroplated over the polished body and then lacquered; the lacquer is what keeps the copper from tarnishing on the shelf, and it is what determines how long the finish looks new in service.
What We Check Before the Cartons Close
Production runs are inspected to AQL 2.5, and the inspection covers the things that actually generate returns rather than a generic checklist:
Capacity — filled to the rim and checked against the stated volume, because a mug that holds less than the menu says is a complaint waiting to happen. Welds — handle joints and body seams inspected for continuity and finish. Finish adhesion — plated and lacquered surfaces are tape-tested on the actual production finish, not on a flat sample panel. Rim — checked for smoothness and roundness, since it is the part that touches the customer. Packaging — drop and stacking checks on the carton, because most damage happens in transit and not in the factory.
Our material and finish declarations are backed by third-party testing: SGS report NGBHL26003106301 and QIMA report T-24364588-11-R, both issued in 2026. If your market needs a specific food-contact standard, tell us which one and we will quote against it rather than guess.
Solid Copper vs Copper-Plated vs Full Stainless
| Option | Look | Care required | Cost | Best for |
|---|---|---|---|---|
| Solid copper (304 liner) | Warm, darkens with age | Hand wash, periodic polishing | Highest | Premium bars, gift programmes |
| Copper-plated over steel | Bright copper, lacquered | Lacquer wears; avoid abrasives | Mid | Volume retail, promotional lines |
| Full 304 stainless | Brushed or mirror steel | Dishwasher safe, minimal | Lowest | High-turnover bars, hotel F&B |
Lead Times, Reorders and What to Send Us
Sampling runs 10–14 days and production 30–35 days from sample approval, with a MOQ of 300–500 pieces for stainless builds. Repeat orders are the easy part: once tooling and finish standard are on file, a reorder skips sampling and goes straight to production.
To get an accurate quote, send the capacity you need, the finish, the logo artwork, the quantity and your target delivery window. If you are still deciding between copper-plated and full stainless, tell us how the mugs will be washed — that single answer usually settles it, and it is the difference between a finish that looks good for a season and one that looks good for years.
