Traditional Polish Żurek Recipe: Authentic Sour Rye Soup Zakwas starter: 5–7 days | Total soup time: 1 hour active | Serves: 4–6 | Difficulty: Intermediate Quick Overview Make the zakwas (fermented rye starter) 5–7 days ahead — it needs time to sour properly Simmer broth with white sausage until cooked through — about 25 minutes…