Why are there no calories in mustard?
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2 min read
In the United States, a nutrition label can legally state zero calories per serving if it contains fewer than 5 calories. This regulatory loophole is the real reason people believe mustard is calorie-free, despite the fact that it is made from calorie-containing mustard seeds and other ingredients. This common misconception is based on the small serving size and legal rounding rules, not the actual absence of calories.