Sweet Corn Syrup: Cut the kernels off the corn cobs and place both the kernels and cobs into a pot with the sugar and water. Simmer for 10 minutes. Remove the cobs and continue simmering for an additional 5 minutes. Cool for 30 minutes. Strain through a fine mesh strainer and store in the refrigerator for up to 3 months.
For the Street Corn Sour, use a lime wedge to wet the rim of a rocks glass, then dip into Tajín to coat the rim. Add bourbon, syrup, and lime juice to an ice-filled shaker and shake until chilled. Strain into a cocktail glass with ice and garnish with a smoked lime wheel.