Mugs are cheap to replace and easy to keep for years. The difference is usually four or five habits. Here is what actually matters, by material.
Glazed ceramic and stoneware
These are the most forgiving mugs you can own. Almost all are dishwasher and microwave safe, and the product page tells you if a particular one is not.
- Do not thermal-shock them. The single most common way a ceramic mug cracks is boiling water into a cold mug straight from an unheated cupboard in winter, or a hot mug into cold rinse water. Warm the mug with hot tap water first; it takes three seconds and it is the whole trick.
- Coffee and tea stains lift with bicarbonate of soda. A teaspoon, a splash of water to make a paste, a soft cloth, two minutes. Do not reach for a scouring pad – it scratches the glaze, and the scratches then hold stains worse than before.
- Unglazed foot rings scratch worktops. The ring on the base of a stoneware mug is often left unglazed. Run a fine sanding sponge over it once and it will never mark a table again.
- Crazing is not a fault. A fine web of lines in the glaze on reactive or crackle finishes is intentional on some mugs and develops naturally on others. It does not affect the safety or the strength of the mug.
Porcelain and bone china
Thinner, lighter, and better at showing off a good tea. Also less tolerant of impact.
- Dishwasher safe unless the mug has a metallic band – gold, platinum or lustre trim will dull and eventually strip in a dishwasher, and it will spark in a microwave.
- Store them with space between the handles. Chips on fine china almost always come from mugs knocking together in a cupboard, not from use.
- The thin rim is what makes it pleasant to drink from and what makes it fragile. It is a trade-off you are choosing on purpose.
Glass mugs
- Check whether it is borosilicate or soda-lime. Borosilicate handles boiling water poured straight in; soda-lime glass does not and will crack. The listing says which.
- Double-wall glass is dishwasher safe but not dryer safe in the usual sense – water can sit in the gap around the seal. Wash it, then leave it upside down to drain properly before putting it away.
- Cloudiness after many dishwasher cycles is limescale etching, not dirt. A soak in white vinegar clears the early stage; once it is properly etched it is permanent, so use a rinse aid if you live in a hard-water area.
Insulated stainless steel travel mugs
- Never microwave one, and do not put one in a dishwasher unless the manufacturer explicitly says it is safe – dishwasher heat can degrade the vacuum seal that makes the mug work.
- The lid is where the smell lives. Take it apart. Almost every travel lid has a silicone gasket that pulls out, and the gap behind it is where old coffee goes stale. Rinse both parts, dry the gasket before refitting.
- Pre-heat with boiling water for a minute, tip it out, then fill. It buys you a noticeably longer hot window on a cold morning.
- If a mug stops holding heat, the vacuum has failed. That is a manufacturing fault rather than wear – contact us.
General
- Load mugs on the top rack of a dishwasher, angled so water drains out rather than pooling in the base.
- Do not stack mugs inside each other with the handles interlocked; that is how rims chip.
- A chipped rim on any mug means retiring it from drinking. A chip is sharp, and it collects bacteria in a way a smooth glaze does not.
Questions about a specific mug in your order? Email support@luvmuggs.com with the product name and we will tell you what the manufacturer specifies.