KARALAHANA ÇORBASI ||| SWEET CORN & BEAN SOUP WITH COLLARD GREENS excerpted from ISTANBUL & BEYOND by Robyn Eckhardt. Reproduced by permission of Houghton Mifflin Harcourt. All rights reserved. ||| The main ingredients of this thick, hearty soup from the province’s capital, Rize, on the eastern Black Sea coast, are staple foods of the region. The sweetness of dried corn plays off collard greens’ slight bitterness. You can buy dried sweet corn online. (Do not substitute hominy.) Dried beans must be soaked overnight. If you want an even richer soup you can use beef stock instead of some or all of the water. Like most soups, this one improves with time, so make it ahead if possible. Serve with Griddled Corn Breads.