In a blender or food processor, add the heavy cream, sweetened condensed milk, Irish whiskey, chocolate syrup, espresso powder, vanilla extract, almond extract, ground cinnamon, ground nutmeg, and salt.
Blend until all ingredients are well combined and smooth.
Taste and adjust the sweetness or thickness according to your preference.
Use a funnel to transfer the mixture into a glass bottle with a lid.
Chill in the refrigerator for at least 2 hours before serving to allow the flavors to develop.
When ready to serve, give the bottle a good shake to mix the ingredients that may have separated.
Pour the Irish cream into serving glasses and enjoy!