Related Clues:

• Gravy, on menus
• Flow slow
• Move like ketchup
• Slugs do it
• Slip through the cracks?
• Au -- (menu phrase)
• Behave like goop
• Au -- (in its own gravy)
• Soft mud
• Move like Slimer
• Beef au __
• Squishy stuff
• Exhibit aplenty, as confidence
• Gravy, on a French menu
• Seep like sap