How to serve oranges so it is easy for guests to enjoy them?
For special guests you can 'segment' citrus, but I've always found it a thankless chore that wastes a lot of fruit, so I don't undertake the process lightly. This process is especially nice if you are using the citrus in something like a dessert or salad where the texture of the tough membrane can throw off the dish. However, as is the case with a citrus salad, the time adds up. To do it easily, it helps to have a really good paring knife, and a nice piece of fruit.

Start by cutting the top and the bottom off, just enough to expose the familiar star pattern of the segments. Then, cut down the orange from top to bottom, removing the entire rind by section. Leave none of the white stuff, it only gets in the way. The smaller you make each strip, the more fruit you can conserve. You should be left with a bald, juicy looking thing.

Now the membrane, which separates each segment, is exposed. To dislodge the first piece (always the hardest), slide the knife just membrane on either side. Once the first piece is freed, you have the room to peel back each membrane in turn. You be left with the essence of orange on one hand, and the deflated (and nutritious) husk of membrane on the other.