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A numeral symbol representing the absence of quantity or a null value, zero (0) is a fundamental mathematical concept rather than a culinary ingredient. In the context of food science and gastronomy, "0" may reference preparations with zero added ingredients beyond a base component, zero-calorie preparations, or molecular gastronomy techniques that deconstruct ingredients to their essential elements. However, zero itself is not an edible substance.

Zero does not have direct culinary applications as an ingredient. The term may appear in recipe notation (e.g., "0 salt") to indicate the deliberate absence of a component, or in modernist cuisine to describe dishes stripped to minimal elements. Some culinary contexts reference "zero-proof" or "zero-alcohol" beverages.