The foods that don't fit into a food group, like soda and candy, count as discretionary calories. (verywellfamily.com)
I prefer to eat «healthy» food for 90 % of my daily intake and then I allow discretionary calories for the other 10 %. (drsarasolomon.com)
Would it be preferable to talk about discretionary calories that could be used in a variety of ways, to stress the need for nutrient density? (health.gov)