Kupus na tabak is a traditional dish from the Croatian island of Korčula. The main ingredient is finely sliced and chopped local collard greens known as raštika, hence the name that refers to a way of chopping tobacco leaves. Apart from collard greens, the dish includes boiled potatoes, olive oil, and garlic.

Kupus na tabak is typically prepared in summer, but in Vela Luka, the dish is traditionally prepared in August, when there is a special event called Večer Kupusa na Tabak.