You should have about 2 cups of peeled grapefruit sections. (mindbodygreen.com)
By comparison, a 1 - cup serving of canned grapefruit sections packed in water has about 90 calories and just 1 gram of fiber. (healthyeating.sfgate.com)
I roasted the beets ahead of time and used Costco's refrigerated ruby red grapefruit sections and bought one grapefruit to use for the zest. (epicurious.com)