The duo of whiskey and pickle brine is well matched, with the latter helping to tame the burn that the whiskey can cause going down.
Combine whiskey, pickle brine, and hot sauce in a shaker with ice.
You can probably find Tajin spice mix in your grocery store, but if not, it's also available on Amazon.
Recipe by Whole Life Challenge® at Low-Calorie Pickleback Martini https://www.wholelifechallenge.com/low-calorie-pickleback-martini/