Registration is open for a mushroom cultivation class to be led by David Falkowski of Open Minded Organics in Bridgehampton on May 6. The half-day session will include a tour of the company’s mushroom farm, a discussion of basic mycology, and information on indoor and outdoor mushroom cultivation. Roman Roth, the winemaker at Wolffer Estate Vineyard in Sagaponack, will host a private tasting in the wine cellar on Saturday at 1:30 p.m. featuring a number of Wolffer varietals and vintages and including information about the creation of each wine and how to pair it with food.