Berezovy sok (birch sap)
For two or three weeks at the end of March and into April, while there is still snow under the trees and before the buds open, the birches around Moscow, Tver, Vologda and across the north start to run. Families tap a few trees at the dacha and drink the sap straight from the jar: clear, cold, very faintly sweet, tasting of rainwater and fresh wood. Because it spoils within two or three days, villagers bottled the rest with sugar, raisins and lemon zest, letting it ferment slightly into a sparkling drink that kept into early summer; like any ferment it makes a trace of alcohol, well under 1% if drunk young. Only tap with the owner's permission, choose trees thicker than 20 cm, drill one small hole and plug it with a wooden peg afterwards so the tree heals. The common mistake is sealing the bottles tight at warm room temperature, which can make them burst; keep them cool and open the caps daily. The bottled sap is ready when the raisins float, a ring of fine bubbles forms on top and it tastes gently sparkling. Chef's tip: drink the first glass straight from the tree; it is never quite as good again.
























