Rainbow Finger Jello
["4 (3 oz.) boxes jello (any flavor: lemon, lime, orange and strawberry work well)", "6 envelopes Knox gelatine", "1 can sweetened condensed milk"]
["For each jello layer:", "Mix one box jello with 1 envelope Knox. Add 1 cup very hot water; stir until dissolved.", "Pour into a lightly greased 13 x 9-inch pan.", "Refrigerate until set, about 15 to 20 minutes."]
["boxes jello", "gelatine", "condensed milk"]