So when you've swallow'd the Potion, you sweeten your Mouth with a Plumb

Congreve, Double-Dealer, iii. 4. The dried grapes which the French term raisins secs, or raisins pa és, we term simply raisins when used for eating uncooked, and plums when they form an ingredient in the famous English plum pudding. S. Dowell , Taxes in England, IV. 37. 5. A good thing; the best or choicest part; a sugar-plum: in allusion to the use of plums or raisins in cakes, plum-pudding, etc. The reviewer who picks all the plums out of a book is a person who is regarded with reasonable terror and resentîment by both authors and publishers.