Thoroughly grease bottom and sides of a 2-quart heat proof mold or 9 inch bundt pan.
Sprinkle with white sugar and tap out excess.
n large mixer bowl, beat butter, sugar and vanilla until light and fluffy.
Add eggs and blend well.
In separate bowl, stir together flour, cocoa, cinnamon and baking soda; add to butter mixture alternately with milk until well blended. Stir in the chopped nuts.
Spoon batter into a greased mold. Cover with piece of greased aluminum foil, greased side down. Fold down edges of foil around rim; fasten securely with string.
Place a rack in la large kettle or pot; pour in water to top of rack.
Heat water to boiling; place mold on rack. Reduce heat. Cover kettle and steam cake over simmering water for hour and 25 minutes or until cake tester inserted in center comes out clean. (
Add water, as needed, during steaming to keep water at rack level.)
Remove mold from kettle; cool 10 minutes on wire rack. Run tip of sharp knife around edges; invert on serving plate.