Actually, there are 2 kinds of orange produced here. (Both are green). Go figure, 'cause some limes are orange. It's the sour orange that makes the brew so tasty! Equal parts of sweet and sour oranges works best. Just try the stuff at the little food stand across from Tropic Air at municipal Airport! OUTSTANDING!
ps. All oranges that are mass produced are grown on lemon root stock. So why can't we get any lemons? No lemon trees. tee hee