Whip the cream: In a large chilled bowl, whip heavy cream until stiff peaks form.
Make the base: Gently fold in sweetened condensed milk and vanilla until smooth.
Divide: Split mixture evenly into three bowls.
Flavor each layer:
Pistachio: Stir in crushed pistachios, almond extract, and coloring.
Cherry: Mix in chopped cherries and syrup.
Chocolate: Blend in cocoa powder and mini chocolate chips.
Layer: Line a loaf pan with plastic wrap. Spread pistachio layer first, smooth it down. Add cherry layer, then chocolate layer on top.
Freeze: Cover with plastic wrap and freeze for at least 6 hours or overnight.
Serve: Lift from pan, slice with a serrated knife, and enjoy.