Add the condensed milk, cold heavy whipping cream, half and half, cocoa powder, peppermint extract and vanilla extract to a large food processor.
Blend for 2-3 minutes until the mixture is smooth, thick and creamy.
Gently fold in the pinch of sea salt and most of the chopped mints (reserve some for the top).
Pour the ice cream into a loaf pan or a freezer friendly container. Sprinkle the remaining mints on top and place it in the freezer for 4-6 hours or overnight.
Let the ice cream sit out a few minutes before scooping.