I didn't use the Sour cream or the mayo..
We had something like this in Hawaii, but with Yogart..
I make this with non-fat strawberry yogart, also no grapefruit..used oranges instead...
Actually you can use any fruit you chose..throw in some grapes, bananas, canned pineapples in its own juice if you cannot find fresh, kewi, Apples ect.
This is so refreshing in the summer, and everyone seems to love it..
I make a big bowl of it, and served it with a BBQ..
This can even be served as a desert, in brandy glasses, or I have cut papaya's in half, and put all the fruit on the top of it, on a flat desert plate for each person...