1 (6 oz.) pkg. semi-sweet chocolate bits
2 tbsp. butter
1/4 c. sherry (more, if sugar is hard to handle)
1 egg yolk, unbeaten
1 lb. confectioners' sugar
1 c. nutmeats, broken
1 tsp. vanilla (optional)

Melt chocolate and butter in sherry over hot, not boiling water. Add egg yolk to sifted sugar. Add chocolate mixture to sugar and mix thoroughly. It is at this point that more sherry may need to be added. Try one teaspoon first. Add nuts. Spread in 8"x8" buttered pan or dish and after cutting into squares put into refrigerator.