How to choose: Especially this late in the season, choose these by their heft and by their smell. The peel tells you little -- ripe fruit can still have a trace of green in the color and a scarred rind does not affect the flavor.
How to store: Because their peels are so thick, Oroblancos can be kept at room temperature. They'll last several weeks.
How to prepare: Make a fruit salad. Use sharp knife to peel the fruit, removing all the white pith, and then slice it crosswise about one-quarter-inch thick. Arrange in a bowl. Simmer 1 cup of water with one-third cup of sugar until it's clear. Add a tablespoon of slivered basil and cool to room temperature. Pour this over the grapefruit and serve at cool room temperature