The bitter orange (origin India, Myanmar, and China border) is a winter fruit that arrived in the bay after being cultivated in Seville, Spain. It's a recipe staple for jams, pastries, cakes, juices, arancini (candied orange peel), and particularly marmalade. In the Orthodox Christmas tradition, known locally as Badnjak (Christmas Eve), a bitter orange with a small oak branch adorns front doors to symbolize St. Nicholas' gift of gold.