A terrific way to literally spice up your Whiskey Sours!
I see other recipes calling for 1:1 with Rye and Chili liqueur, but I think Difford has his specs adjusted well - the chili makes its presence known without overpowering the rye.
Each palate is different of course, but in a side by side comparison of these specs with S&C vs Dr. Bird, I found Dr. Bird overwhelmingly overtook the drink.