Fee Brothers 4 oz Orgeat Syrup

1 1/2 oz. bourbon
1/2 oz. orgeat syrup
1/2 oz. heavy cream
1/2 oz. coffee liqueur
2 to 3 dashes rootbeer bitters
2 to 3 dashes vanilla extract
Soda water

Combine all ingredients, except the soda water, and shake with ice. Strain into a glass and gently stir while adding the soda to achieve a good froth. After it sits for 20 seconds or so add an ounce more soda water to lift the head above the glass. Serve with straw.