I used to work at a Starbucks, and in recent years they have released a cold foam that goes with they're drinks and cold brew. After trying Mr. Black I wanted a drink that didn't need very complex flavors or was overly sweetend. One that you are able to just drink and enjoy. My concept is one where you have little input on altering the coffee, no mocha or pumpkin spice drink, let the coffee do the talking. I was looking for flavors that will pleasantly delight you and that you wouldn't expect.
Add heavy whipping cream, Blueberry juice, and simple syrup (1 bar spoon specifically) into a blender or shaker.
Shake ingredients for 5-8 seconds. (You do not want an overly thick consistency). This gets added on top later
Add coffee, whiskey, Mr. Black, and egg white into shaker.
Dry shake ingredients once. Then wet shake ingredients once after.
Double strain coffee mixture using a Hawthorne and fine mesh strainer into a short rocks glass.
Ensure about 0.5 - 1 inch of room is left at the top.
Grab foam topping and fill to brim of glass and enjoy.