Possible Clues:

• Sounds as if this might come with ordinary grouse (8)
• Express grievance
• 75% curry and ordinary beef
• Organisation with source of mature prairie beef
• Be sick of the palm out when there's money about
• Find fault
• Grouse, beef or carp?
• Grumble, moan
• Make objection
• Moan about what's obvious in the end