Possible Clues:

• Extreme cuts uncovered the majority
• Greatest stout is brewed with malt, primarily
• Furthest point or degree of effort
• Furthest - greatest possible
• You come to tea; do your best
• (To the) maximum (extent)
• Do your best so that's it's in the mutt
• Limit trade union backing more than any other
• You can't get further than a thousand in stout
• (To the) maximum