|1⁄2||oz||Mezcal, Del Maguey Vida|
|1⁄2||oz||Walnut Liqueur, Nocello|
|1⁄4||oz||Bitters (Bittermilk #6 Oaxacan Old Fashioned)|
Shake dry then with ice. Express peel and use as garnish or discard.
Don't know what a suitable substitute for the Bittermilk would be, but I don't think Bittermens would be it. Have also garnished with a couple cardamom pods, or even a bit of alder smoked sea salt atop the foam. Go nuts.