A heat diffuser, flame tamer, or simmering plate (UK) is a cooking utensil that is placed on top of a burner on a cooktop to separate the cooking pot or pan from the direct source of heat, making the heat more gentle and even.1
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Last revised Jun 20, 2026
Heat diffuser
A heat diffuser, flame tamer, or simmering plate (UK) is a cooking utensil that is placed on top of a burner on a cooktop to separate the cooking pot or pan from the direct source of heat, making the heat more gentle and even.