(Cover) - EN Showbiz - Adrian Grenier decided to share his knowledge of wine with a couple he saw struggling to choose a bottle.

The star is well known for playing Vincent Chase in American show Entourage, and enjoys chatting with fans wherever possible. He was recently stocking up on groceries at the Bristol Farms store in Hollywood when he saw a man and women perusing the wine aisle. Adrian knows lots about the alcoholic beverage, so decided to help them out.

“Adrian stepped in and offered his expert knowledge,” a source explained. “After chatting for a while, he recommended one of his favourite California pinot noirs.”

The star stayed for a bit longer with the couple, before heading home. As he turned to leave he quickly called out to remind them to watch Entourage over the weekend, much to the pair’s confusion.

“What’s Entourage?” they were heard asking each other. (C) Cover Media