Pottery Care and Use

Handmade pottery is one of the most intimate craft forms — each piece carries the maker's fingerprints, literally. Knowing how to use and care for it ensures your investment lasts and stays beautiful.

Is Handmade Pottery Food Safe?

The short answer: most is, but always ask. Food safety in ceramics comes down to the glaze.

Food-Safe Glazes

A food-safe glaze is one that doesn't leach heavy metals (primarily lead and cadmium) into food or drink. Most contemporary American craft potters use commercially prepared, food-safe glazes, but it's worth asking. Red and orange glazes historically required higher-risk colorants — modern equivalents are safe, but it's a fair question for vintage or imported pieces.

Unglazed Clay and Porosity

Unglazed surfaces (inside a mug, the bottom of a bowl) are porous. They can absorb oils and bacteria over time. Food-safe use requires a fully glazed interior surface. Some rustic or decorative pottery is not intended for food contact — makers will tell you.

Dishwasher Compatibility

Many handmade pieces survive dishwashers, but the heat and detergent cycles take a toll over time. The risks:

• Glaze crazing — tiny cracks in the glaze surface (usually cosmetic but can allow bacteria into cracks over time)
• Thermal shock — rapid temperature changes can crack clay bodies, especially thin-walled pieces
• Luster glaze damage — metallic finishes often degrade in dishwashers

Best practice: Hand-wash with warm soapy water. It takes 30 seconds and significantly extends the life of a piece.

Microwave Use

Most pottery without metallic decoration is microwave-safe. Metallic glazes, gold/silver luster, and metal inlays will arc and spark in a microwave.

Even non-metallic pieces can become very hot in the microwave if the clay body is dense — the clay absorbs microwave energy and may become too hot to hold safely. Test with a short 30-second cycle before putting food in.

Hand-Thrown vs. Slip-Cast Pottery

Hand-Thrown

The classic image of pottery: clay centered on a spinning wheel and shaped with the hands. Each piece is unique, shows tool marks, and has the subtle variation of human touch. The bottom often has trimming marks from when excess clay was cut away after drying.

Slip-Cast

Liquid clay (slip) is poured into plaster molds, which absorb moisture until a wall forms, then the piece is removed and fired. This method produces very consistent shapes — common in production studios. It's not less skilled, but pieces are more uniform and the process is faster.

How to tell: Flip the piece over. Hand-thrown pieces often show spiral tool marks on the base. Slip-cast pieces are more uniform and may show seam lines where the mold halves met.

Oven Use

High-fired stoneware and porcelain are generally oven-safe. Low-fired earthenware (terra cotta) is not recommended for oven use. The key risk is thermal shock — never put a cold piece directly into a hot oven. Start in a cold oven and heat gradually.

Repairing Chipped Pottery

Small chips on rims or exteriors can be carefully sanded smooth with fine-grit sandpaper (400+ grit) to prevent cutting lips. Chips exposing raw clay inside a food vessel are a hygiene concern — the piece may need to be retired from food use or repaired professionally.

Kintsugi is the Japanese art of repairing pottery with lacquer mixed with gold powder — it transforms damage into beauty and is enjoying a revival among Western ceramicists. If a beloved piece breaks, repair is worth exploring.