Cave Spring produces wines from Ontario's Niagara Peninsula, a cool-climate region shaped by the moderating influence of Lake Ontario. The winery focuses on Riesling and Chardonnay, varieties that thrive in the region's conditions. The Estate Grown Riesling Brut—a sparkling expression of the house's signature grape—has earned recognition from Wine Spectator, Decanter, Wine Enthusiast, and Wine Advocate. The Riesling Icewine, made from the same variety, demonstrates the region's capacity for concentrated dessert wines. A Blanc de Blancs CSV, crafted from Chardonnay, rounds out the portfolio. These wines reflect the terroir of Niagara Peninsula, where cool temperatures and extended growing seasons favor high-acid, mineral-driven expressions.