Umeboshi calamansi lime juice is a refreshing drink popular in Asia, made with calamansi limes and sour plums aka umeboshi over ice.Back in February of this year, I went to my Costco and discovered several pallets of citrus trees right outside the front door. To my absolute amazement, one of them was a calamansi lime! The tag had a different name and the peels were orange instead of green, but