The village co-op was founded in 1954 by more than two hundred local growers, and it's still the easiest, cheapest way into Ruchè di Castagnole Monferrato — the cellar's flagship, floral and lightly peppery, and the wine people cross the border from Switzerland to stock up on. Alongside it there's Barbera and Grignolino, a well-priced rosé you can taste straight from the barrel, and two ranges to choose between: the everyday Linea Tradizionale and the pricier Terre dei Roggeri selection.
You can buy bottled or in bulk, filling your own containers the old way, and the shelves carry local jams and honey besides. One catch worth knowing: they'll pour you the bulk wines to taste but not always the bottled ones, so buy a case before you commit to a pallet. Open Tuesday to Saturday morning and afternoon and Sunday mornings, closed Mondays; there's plenty of parking and the office staff are patient with a carload of questions.