We have a sour orange tree. Every year I make Orange Marmalade. This year I am making candied citrus peel. Gosh our house sure smells good! I used 10 pounds of sour oranges, froze the juice in ice cube trays for later in the year when I don’t have any oranges. It’s really good in iced tea and essential to making the pickled onions Yucatecos put on cochinita and salbutes. I also marinate meat in it. You can substitute it for vinegar in salad dressing too. Best of all for me, it’s free!