Use an electric mixer to whip the cream until soft peaks that hold their shape form. Set aside.
Separately, whisk together the sweetened condensed milk, cinnamon, nutmeg, vanilla and bourbon until smooth. Whisk in the whipped cream, 1/3 at a time, until well combined.
Transfer the ice cream to a lidded container and freeze for 8 hours, or overnight, until firm and scoopable.
Frozen Custard
In a saucepan, whisk together 1 cup of the cream with the milk, sugar, brown sugar, egg yolks, cinnamon and nutmeg. Cook over medium heat, whisking constantly, until thickened enough to coat a spoon (it will not be thick like pudding). This might take about 10 minutes. Don't let the mixture come to a boil.
Pour the custard through a mesh strainer to remove any bits of cooked eggs. Stir in the vanilla. Cover with plastic, resting right against the surface of the custard, and refrigerate until thoroughly chilled, preferably overnight.
Use an electric mixer to whip the remaining 1 cup of heavy whipping cream until soft peaks form. Fold the cream into the chilled custard.
Churn the ice cream in your ice cream maker according to the manufacturer's instructions, adding the bourbon during the last minute of churning.
Transfer the ice cream to lidded containers, and freeze until firm, about 8 hours.
Yields about 1 1/2 – 2 quarts.
Keyword Cinnamon, Frozen Custard, Ice Cream, No Churn Ice Cream