Possible Clues:

• Pessimist's maxim
• Principle that anything that can go wrong will go wrong
• *Type of bed (Hint: In each starred clue's answer, ignore a dish)
• Expect the worst from this potato salad
• "Anything that can go wrong will"
• Cynical view of potato and salad
• Certain disaster, the rule of King Edward?
• Sounds like Irish legislation is bound to go wrong (6'1,3)
• 'If something can go wrong, it will'
• "If it can go wrong, it will"