If using fresh peaches, wash them thoroughly and cut out the pit, leaving the skin on for maximum flavor. Blend the peach chunks until completely smooth, creating a puree.

Pour a shallow dish of Tajin seasoning or coarse salt onto a plate. Rub the rim of your margarita glass lightly with a lime wedge, then dip it into the seasoning at a slight angle.

Add a handful of large ice cubes to a cocktail shaker or mixing glass.

Pour 1.5 ounces of silver tequila into the shaker using a jigger.

Squeeze fresh lime juice into the shaker until you have 1 ounce.

Add 1 ounce of your freshly blended peach puree to the shaker, followed by 0.5 ounce of Cointreau or triple sec. If you have fresh peach juice, add the optional 0.5 ounce.

Close the shaker tightly and shake vigorously for 10 to 12 seconds until the outside of the shaker becomes frosty.

Place your rimmed margarita glass on the counter and strain the shaken mixture into it using a Hawthorne strainer.

Garnish with a fresh peach slice and a lime wheel.