There’s an old saying that nothing is truly free, but whoever came up with that adage obviously hadn’t heard about Michel Richard’s latest promotion. Every Wednesday from 5-7 p.m., Central will host free wine tastings in its lounge. Following these events, diners can continue to enjoy the featured vintages at specially discounted prices in both the dining room and the bar. Each week’s spotlighted wines will be announced on Wednesdays by noon via Central’s Twitter feed. It looks like you need to start carving out some free time in the middle of the week.