Selecting the right glaze for a porcelain sculpture intended for food safety requires careful consideration of several critical factors. First, ensure the glaze is explicitly labeled as "food-safe" or "non-toxic," meaning it meets regulatory standards like FDA or EU guidelines for lead and cadmium leaching.

The glaze's firing temperature is equally important. High-fire glazes (cone 6-10) tend to be more stable and less porous, reducing the risk of bacterial growth. Low-fire glazes may require additional testing to confirm food safety.

Durability matters too. A glaze should resist chipping, cracking, or crazing, as these imperfections can harbor bacteria. Opt for glazes with proven thermal shock resistance, especially for items exposed to temperature changes like serving dishes.

Finally, consider the glaze's composition. Avoid glazes containing harmful metals like lead or barium in functional ware. Transparent or lightly colored glazes often have simpler, safer formulations than heavily pigmented ones. Always verify the manufacturer's safety documentation before use.

By prioritizing these factors, artists can create beautiful porcelain sculptures that are both aesthetically pleasing and safe for culinary use.