In a 1 cup measure, put cocoa powder; add a small amount of hot water and stir until cocoa dissolves. Fill remainder of measuring cup with milk to bring the measurement up to 1 cup total.

Combine flour, salt and baking soda, mixing well. Set aside.

Beat shortening or butter and sugar, add egg yolk, beating for one minute. Stir in vanilla and remaining ingredients.

Mix for one minute. Turn batter into a buttered brownie pan which has been lightly dusted with cocoa (shake out any excess cocoa).

Bake for about 40 minutes or until cake tests done.