Russian Birch Sap Tonic (Berezovy Sok) — Herbal Remedy for Spring cleansing, kidney support, gout, skin health. Modern: mineral supplementation, kidney health, anti-inflammatory, antioxidant intake | Living Netism

Birch sap (Berezovy Sok) is a traditional Russian spring tonic collected from birch trees during the early thaw. The sap is mineral-rich, containing manganese, zinc, calcium, and various organic acids