Designed for modern-day living, Portmeirion’s tableware is “oven-to-table”, microwave, and dishwasher-safe. Most tableware items – such as dinner plates, mugs, serving bowls or platters, etc. – can be placed in a warm oven (225° F or lower), but should not be used for cooking. Do not place items on a direct source of heat, e.g., halogen burner, electric coil, or gas burner. Allow ware to cool naturally for a short period of time before placing it in water to wash or on a cold or wet surface such as tile, stone or metal. Do not cool items by placing them in cool water.