PROBLEM TO BE SOLVED: To provide a method for improving the taste of an inorganic metal salt capable of eliminating or decreasing unpleasant taste that the metal salt secondarily has while maintaining or improving the taste the inorganic metal salt useful as an addition material for food peculiarly has, and to provide a method for producing a food additive, and the food additive.SOLUTION: A method for improving the taste of an inorganic metal salt includes a process for processing the inorganic metal salt by smoking. The method can suppress unpleasant taste while maintaining the peculiar excellent taste of the inorganic metal salt. The obtained food additive is useful in various fields such as food manufacture and cooking.