
Rainwater is a historic Madeira style with a US-trade origin: nineteenth-century lore has it that barrels left dockside in the rain ended up lighter, paler, and more refreshing - the name stuck for a lighter, semi-dry, mid-aged Madeira favoured in American markets. The category isn't a formal IVBAM designation but a traditional commercial style, typically aligned with the Meio Seco (medium dry) sugar level.
Barbeito's Rainwater Reserva is 80% Tinta Negra and 20% Verdelho (per the producer's spec sheet; the Ukrainian importer sticker lists only Tinta Negra), aged five years in old French oak casks by the canteiro method - the costly attic style, where barrels age at stable ambient temperatures rather than the heat-accelerated estufagem most entry-tier Madeiras use. Medium dry (around 72 g/L residual sugar), 18.1% ABV. 500 ml. The lighter end of the Madeira spectrum, built to be drunk chilled.