Wine connoisseurs assert that novice tasters should never pair red wine with fish, white wine with red meat, or excessive wine with jury duty. Lap up today's Groupon in moderate proportions: for $25, you get $50 worth of fine wines from Grand Wine Cellar, either online or at its shop in Syosset. This deal is only valid for wine, not for spirits or other products.

Grand Wine Cellar’s 8,000-square-foot shop contains all manner of popular and obscure wines from around the world, with an inventory also readily accessible online. Behind-screen shoppers can click on the 90+ Wines Under $30 tab to explore a self-explanatory selection of reds, whites, roses, and champagnes, many priced at less than $15, or they can scroll through the Best Bargains, where bottles of heavenly must-haves are featured at Hades-level prices. Die-hard devotees to a certain grape-based beverage can search it out for purchase by the case, and those in the mood for a savory sampling of preselected top-shelf wines can apply this deal toward a sampler case such as a Best of the Best Red Zinfandel six-pack ($140).

For face-to-face encounters with the friendly oenophiles who make up the Grand Wine Cellar staff or to partake of a tasting held several times each month, visitors can stop by the brick-and-mortar store. There, walk among the racks and grasp hold of a real-life bottle, feeling its weight, girth, and swingability before deciding to buy it as the most delicious part of a rapidly messy baseball game.

This Groupon cannot be applied to shipping costs. You must be 21 or older to purchase.