Albert Barnes Commentary 2 Samuel 6:19

"And he dealt among all the people, even among the whole multitude of Israel, both to men and women, to every one a cake of bread, and a portion [of flesh], and a cake of raisins. So all the people departed every one to his house." — 2 Samuel 6:19 (ASV)

A good piece of flesh - The word rendered here is found only in this passage and the marginal reference. It probably means a piece of meat from the peace offerings. Since the chronicler explains the preceding word for cake with the more common word for loaf but leaves this obscure word unexplained, one might infer that it was already obsolete and unknown in his time. The Septuagint translates it as “a cake baked on the hearth,” and the Vulgate as “a piece of roast beef.”

A flagon of wine - Rather, this means “a cake” of grapes or raisins (Hosea 3:1; Song of Solomon 2:5), or one made with oil or mead.