Prince Charles has campaigned for a revival of this meat from an older sheep
... a traceable farm 
assured sheep that is at least two years of age has been finished on a forage 
based... [DOC] [TLE] Mutton Renaissance Campaign - Wikipedia [PAR] The Mutton Renaissance Campaign was founded in 2004 by Charles, Prince of 
Wales to advocate for the consumption of mutton (and not lamb) by Britons.