Water & Soil

Why brew up in the mountains of all places? Petrópolis sits at roughly 800 meters elevation in the Serra Fluminense, a forested mountain range in Rio's hinterland. It's noticeably cooler there than on the coast, and that was a genuine advantage for lager brewing before refrigeration existed.

The Piabanha River flows through the city, rising in the Serra and fed on its way down by rainforest and mountain slopes. The mountains catch the moist Atlantic air, rainfall is abundant, and small streams run year-round. Water was never scarce for a brewery here.

How this water showed up in the beer can only be said cautiously. Soft, low-mineral water lets hop bitterness come across clean and rounded, while hard water makes it sharper. Reliable measurements for Petrópolis's historic brewing water don't exist. Today, nearly all breweries treat their water anyway.

Down in Rio, the climate is the opposite: hot, humid, with summer days well above 30°C (86°F). Here it's not the terroir that decides, but the chill in the glass. A beer stored near zero degrees in the cold room tastes like relief in that heat, while at room temperature it would go flat fast.

This two-part geography still shapes the region today. Up in the mountains the first breweries emerged because fermentation was easier to control in the cool mountain climate; down below, beer became the drink of the street, the beach, and the corner bar.