Self-service wine bars have been popping up all over the United States, following a European trend that uses technology originated by Italian company Enomatic. To use these automated systems, just purchase a prepaid (and refillable) card and insert it into the wine dispenser of your choice. You choose whether you just want a sample or a full glass. This is an enjoyable way to expand your wine knowledge, as choices that might not normally be sold by the glass are more readily available. Wines also stay fresh longer, because the machines prevent oxidization. A few places to try this new trend:

Splash, San Diego
This lounge offers a rotating selection of 72 wines in 1-ounce “splashes” or as full glasses. The friendly ambiance — complete with board games — makes for a relaxing evening.
3043 University Ave.

The Park 112, New York
This sleek spot on restaurant row in Harlem has a brand-new fleet of ­self-serve wine dispensers to complement its well-­presented dining menu.
2080 Frederick Douglass Blvd.

Greencork, Memphis, Tenn.
A new Southern offering with a 32-choice self-serve wine bar with 2-, 4- or 6-ounce servings and artisanal fare served in picnic baskets.
2156 Young Ave.