Avocado-Mango Ice Cream

I first tasted avocado ice cream on a trip to Mexico. It was a great surprise to me, and a very pleasant one at that. In this recipe, I have substituted mangoes for half of the avocados, but you can actually go either way: all avocados or all mangoes. (If you use all avocados you will most likely need additional simple syrup.) Combining the two fruits produces a wonderful flavor and texture; the color remains a delicate pale green. Because the sweet mangoes are high in fiber and avocados ca