Not as unusual as this recipe may seem. meat and grapes perfectly bind together. For this recipe, the grape used is Barbera. Barbera is an ancient Italian grape dated back to 17th century; naturally high in acidity with strong black cherry flavors. For its acidity, the flavor must be balanced with a little honey and sweet wine or liqueur during cooking. Obviously you can replace Barbera with any other type of grapes. If your grapes are sweet, simply remove the honey from the ingredients.