Rock Stream Vineyards is an estate winery owned and operated by Dr. Mark Karasz. Mark is a retired Army Lieutenant Colonel with a PhD in chemistry. A three year tour in Italy inspired him to make wine and Grappa. After returning from Italy, he founded Rock Stream Vineyards and began growing his own grapes and making wine, brandy, Grappa and ports. The tasting room as been open since July 23rd, 2005 and is now Seneca Lake’s only winery that is a licensed Grappa and Grape Brandy distillery. Rock Stream also features live entertainment and our own special winery music which is now captured on our two CDs. The vineyard has 40 acres of vines producing over 200 tons of grapes annually to make premium, hand-crafted wines. Open 10-5pm Thursday-Sunday. TasteNY attraction.