I just made a wit with the zest from 2 oranges (off neighbors tree). Tastes great. This was a 10g batch. It might be a blue moon clone (I need to get one and see).
If you don't know, the "zest" simply means using a fine grater and taking the very outer layer off the fruit. You don't take any of the underlying white pith, nor any of the fruit. Maybe 1/2" mm of the outer skin.