Possible Clues:

• Salad cube
• Small piece of toasted bread in soup or salad
• One of the toasts that may be offered with a meal
• Conservative cut by utter defeat? One such could be in the soup
• Salad bar cube
• Landslide admitted by party that's in the soup
• Caesar salad topper
• Party admitting defeat producing little bit of food
• Prisoner hides hammer in piece of bread
• One’s in the soup, hiding having punched crook