Supreme: verb. to cut into segments after removing peel and pith, discarding seeds.
Basically, when you 'supreme' a fruit, you are taking just the central flesh and leaving all the extra behind. The goal is typically twofold. First, you want to eliminate the bitter pith and peel entirely. Second, you will find that supremed fruit is just prettier to look at, and will present a much more elegant presentation.
When I am using citrus for supreming, I always zest it first and save the zest to make citrus sugar- waste not, want not, and all that.
So, here's how it's done:
1. Cut the top and bottom off of your fruit so it sits flat on a cutting board.
2. Cut at an angle around the sides of the fruit, removing the peel and pith entirely.
3. Gently cut out the segments, using the pith as guides for your cuts. Always cut the side closer to you first, and then the further side second. Otherwise it can be challenging to remove whole segments.
4. Awe your friends, family and household pets with your mega knife skills.