Dundonald Highlands (Three Rivers, MI) Eddie Mackay raises beef the old-fashioned way and his beef quality is award-winning... MacKay, a native of Scotland and former president of the National Highland Cattle Association, raises heritage Highland beef on pasture at Dundonald Highlands in Three Rivers, MI. His steers have won first place at county fairs for exceptional, prime marbling (that's almost unheard of from pastured beef)... That's because of his expertise…