There is an excellent "slow" market set up in Piazza Santa Croce until May 1. We just had a quick lunch there (calzones), with a glass of Mossio Langhe Nebbiolo which was great (I bought a bottle for €14.50). Mossio is a small producer with 10 hectares under cultivation producing about 50,000 bottles a year. There are also many kinds of cheeses, salamis, olives and other fresh and prepared foods available at the market, to eat or take home. Definitely worth a visit and a good place for an affordable lunch or dinner.