Thanks to dear Betsy, one of my favorite recipes for homemade liqueur.

HOMEMADE IRISH CREAM LIQUEUR
Makes about 5 cups

1/4 to 1 3/4 cups Irish whiskey, brandy, rum, bourbon, scotch or rye whiskey
1 ( 14-ounce ) can Eagle(r) Brand Sweetened Condensed Milk ( NOT evaporated milk )
2 cups ( 1 pint ) Whipping Cream or Coffee Cream
2 tablespoons chocolate-flavored syrup
2 teaspoons instant coffee
1 teaspoon vanilla extract
1/2 teaspoon almond extract

In blender container, combine ingredients; blend until smooth. Serve over ice. Garnish as desired.
Store tightly covered in refrigerator. Stir before serving.