1 env. unflavored gelatin
1 1/4 c. chocolate chips
1 tbsp. sugar
1/2 tsp. vanilla
1/4 tsp. nutmeg
1 egg-yolk
2/3 c. heavy cream

Combine 3 tablespoons cold water with gelatin; let stand 2 minutes. Add 1/3 cup boiling water and blend until gelatin dissolves. Add chips, sugar, vanilla and nutmeg; blend until smooth. Add egg-yolk and cream plus 3 ice cubes; blend mixture until thickens. Transfer to bowl; place bowl in larger bowl with ice water until mixture mounds. Spread evenly on rolled up cake that's been carefully unrolled. Roll up again and sprinkle with powdered sugar; decorate with chocolate leaves.

LEAVES: Melt 1/4 cup chocolate chips. With small spatula, coat underside of a dry mint leaf or silk leaf, with chocolate; wipe off front of silk leaf. Place on waxed paper on cookie sheet and freeze until firm; peel silk leaf off of chocolate leaf.