Dana :)
Serving size is determined at the recipe level, so it depends on what the recipe says rather than a set weight/amount. However, if you have made a recipe and feel like there should be a different number of servings, you can edit a recipe and change the number of servings - that will update the nutrition information. For example, original recipe might say a cake serves 8, but you want to cut the cake into 12 slices. You can edit the recipe and change it to 12 servings and get the updated nutrition. Hope that helps!