Chop up 1 gallon black walnut hulls

Soak overnight in 2 gallons of water

Drain off water and simmer over a low heat a cast iron pot for two hours.

Soak wool or article to be dyed in an alum and water bath — Use 1 oz alum per 1 gallon water.

Remove wool or garment soak in water overnight.

Result — a never fade dark brown — via Recipe from Faye Hoffmann-Myrtleford, Albury-Wodonga HW&S Newsletter