Renato Ratti is a 100-acre estate in La Morra, in the Piedmont region of Italy. The estate was founded in 1965 when Renato Ratti returned from an early career in winemaking in Brazil and bought a vineyard in Marcenasco. He created his first single vineyard Barolo from that vineyard and soon brought on his nephew Massimo Martinelli to help run the estate. Ratti died several decades ago but the estate is now run by his son Pietro and Martinelli. Robert M. Parker Jr. has written that Renato introduced innovations to the region’s winemaking which greatly improved the wines. He was also an author and viticultural scholar. Today the wines, which are nearly all Barolos, are widely admired. About 300,000 bottles are produced annually.