N
any of numerous leguminous plants of the temperate genus Trifolium, having leaves divided into three leaflets and dense heads of small white, yellow, red, or purple flowers 车轴草
Blackberry's four cheeses--Singing Brook, Violet, Trefoil and Blackberry Blue--are made by cheesemaker Kristian Holbrook and his assistants, who the day I visited included a fresh-faced young woman named Heidi, lacking only a dirndl and a yen to yodel to pass for a Swiss milkmaid.