Possible Clues:

• Mollusc as snail, limpet
• It could be a snail that's enough to make a stag droop
• Escargot? One has good parts for munching!
• Snail, for one
• In turn, do get left at sea and go down ata snail''s pace
• Good parts served to be eaten with garlic
• Snail or limpet
• Shellfish served up, party left with depression
• Food-oriented inn changes its last two items, offering snail maybe!
• Slug, e.g.