1. Sprinkle gelatin over cold water in blender container; let stand 4 minutes to soften. Gently stir with rubber spatula, scraping gelatin particles off sides; add boiling water to gelatin mixture. Cover; blend until gelatin dissolves. Add dry milk powder, cocoa, vanilla and salt; blend on medium speed until well mixed. Add sugar substitute and ice cubes; blend on high speed until ice is crushed and mixture is smooth and fluffy.
2. Immediately pour into 4-cup mold. Cover; refrigerate until firm. Unmold onto serving plate. 8 servings.
NOTE: Eight individual dessert dishes may be used in place of 4-cup mold, if desired.