I found this suggestion for a smoothie in Family Circle magazine a few months ago and finally decided to give it a try last night. I liked it and so I share it here:
GRAPEFRUIT SMOOTHIE
In a blender blend 1 peeled and sectioned grapefruit, 1/2 c. milk, 1/2 c. vanilla ice cream or frozen yogurt, and 6 – 8 fresh mint leaves.
That’s it! It was yummy! Mack prefers her grapefruit smoothie with two tablespoons of sugar. I liked it both ways. We now have one more smoothie recipe to add to our collection.
Kweenmama's Kastle 
January 14, 2011 at 1:23 pm
I would have never thought to use grapefruit in a smoothie because of its tart flavor. I might try this!
January 27, 2011 at 1:08 am
Oh my gosh! That sounds yummy. Unfortunately, grapefruit, mint, vanilla and dairy are all on my banned list. Probably why it sounds extra yummy right now. 🙂