Dissolve raspberry and lemon flavored gelatin in boiling water. Stir in frozen raspberries, breaking up large pieces with a fork. Add cranberry- orange relish. Chill till cold, but not set.
Resting bottle on rim of bowl, carefully pour in lemon-lime soda. Stir gently with up and down motion. Chill until partially set.
Turn into a 5 or 5 1/2 cup ring mold. Chill until firm, about 4 hours. Unmold on crisp greens. Makes 8 to 10 servings.