4 cups heavy cream
1 vanilla bean
1 teaspoon vanilla extract
1 ¾ cups sugar
12 egg yolks
1 cup bourbon
1 teaspoon ground cinnamon
¼ teaspoon nutmeg

1. In large pot over low/medium heat, warm heavy cream.
2. Remove the seeds from vanilla bean. Add seeds and vanilla extract to heavy cream. Then, add half of sugar (about ¾ cup) to mixture.
3. In mixing bowl, whisk together remainder of sugar and egg yolks.
4. Remove cream mixture from heat. Slowly add to yolks, constantly whisking.
5. Pour mixture back into pot and cook over low heat, constantly stirring. Add bourbon, cinnamon, and nutmeg.