The Best Beet Borscht In Eastern Europe, where borscht is king, you could eat a different recipe of borscht every week of the year, and each would be authentic. Although borscht is thought of as a beet dish, the word means any soup made with a variety of vegetables. My version is easy to fix, yet retains the qualities found in a more time-consuming preparation. I flavor with kvass, a traditional fermented beet liquid for use in red cabbage found in European delis, but it’s not necessary; substitute lemon juice if you wish. Notice that the vegetables are slow and low...