Possible Clues:

• Bottom bits
• Doctors keep example on 1 of what's left after 3, 5, 8, 12, 13, 17 and 25 are downed
• Last of the wine
• Remains at the bottom
• Last sip bits
• Grounds, say, debtors included
• Residual sediment
• Leftovers in a wine bottle
• Remains in the bottle
• Wine-bottle residue