Cocoa Balls

Came across this recipe from a recipe box I bought at a second hand store, haven't had a chance to make it myself. Maybe one of you will be interested in making it. Enjoy.

• Ready In: 30 mins
• Yields: 4 dozen

Ingredients

• 2  cups  crushed  vanilla wafers
• 2  cups  sifted icing sugar
• 1⁄4 cup  cocoa (any kind you prefer)
• 2⁄3 cup  chopped walnuts
• 1⁄2 cup sour cream
• 1  tablespoon rum
• 1⁄2 cup  chopped walnuts

Directions

1. Combine sugar, cocoa, walnuts, blend in sour cream and rum.
2. Shape into balls, smaller then a golf ball, roll in nuts.
3. Chill balls in fridge.