In a medium bowl, stir together the sweetened chilled condensed milk and molasses until combined.
In the chilled bowl of a stand mixer or chilled large bowl with a hand mixer whip the heavy cream until fluffy. This will take approximately 1-2 minutes with a cold bowl and beaters.
Add the vanilla extract, ginger, cinnamon, allspice, nutmeg and salt to the whipped cream and blend just until combined.
Gradually blend in the chilled sweetened condensed milk and molasses mixture, scraping down the sides of the bowl as needed. Once fully blended, pour the ice cream base into ice cream freezer containers and freeze for 4-6 hours or overnight for best results.
Video
Notes
Store well covered in an airtight freezer container with plastic wrap directly on top of the ice cream for up to 2 months..