Layer #1: in a large bowl pour: your berry blue Jello mixes, 1 envelope of Knox gelatine, and 2 cups of HOT water. Mix well to combine. CAREFULLY pour mixture into dish. Place dish into refrigerator until set. Approximately 20-30 minutes. Be careful do not wait too long.
Layer#2: in a large bowl pour: 2 envelopes of gelatine, 3/4 cup HOT water, 1/4 cup COLD water. Mix to combine. Into a separate bowl add: sweetened condensed milk and 1 cup HOT water. Mix to combine. CAREFULLY pour milk mixture into gelatine mixture. Mix to combine. SLOWLY pour white layer on top of BLUE layer. Return to refrigerator to set up. Approximately 20-30 minutes. Be careful do not wait too long.
Layer #3: in a large bowl pour: cherry Jello mixes, 1 envelope of Knox gelatine, and 2 cups of HOT water. Mix to combine. CAREFULLY pour mixture into dish. Place dish into refrigerator until set. Approximately 20-30 minutes. Be careful do not wait too long.