Rye sourdough for żurek

Description

Rye sourdough for żurek has a light yellow to creamy brown color with a creamy, slightly frothy surface and a distinctly sour, refreshing aroma with a hint of rye bread. Its taste is intensely acidic, slightly sweet from the grain, and distinctly "earthy," which gives soups depth and character. Nutritionally, the sourdough provides few calories, has trace amounts of protein and fiber, and contains micronutrients typical of rye, such as iron, magnesium, and phosphorus, as well as B vitamins. Due to fermentation, it contains lactic acid bacteria, which can support digestion and improve the bioavailability of nutrients by reducing phytic acid. It is most commonly used as a base for żurek and white borscht, as an acidifying agent for sauces, marinades, and one-pot dishes. It is stored in a clean jar in the refrigerator, covered, and periodically fed with rye flour; it can also be portioned and frozen.