Mace is a spice. It is the vivid red outer covering of the nutmeg seed, which is what gives us ground nutmeg. Mace is similar in flavor but is distinct. Mace has not been lab tested, but its nutritional profile contains fewer carbohydrates and sugars than nutmeg, which has a lab tested by both Monash University and FODMAP Friendly. A low FODMAP serving size of nutmeg is 4 g from both sources.