Lanark Blue is hand-made farmhouse cheedse made from raw ewe's milk; rennet suitable for vegetarians is used.
Humphrey Errington began farming in 1982 on a small farm called Walston Brahead at Ogcastle near Carnwath in Scotland and in 1985 the first Lanark Blue was produced and sold. The sheep Humphrey has 400 sheep grazing on hillsides rich in herbs and clover a thousand feet above sea level, overlooking the valley of the upper Clyde.
The cheese varies throughout the year which is said to be due to the seasonal changes in the animals diet; the cheese is creamy and medium flavored in the spring and becomes very full flavored and wild in the winter. The paste is a mottled ivory white with blue-green mould and the cheese has many similarities with a Roquefort.