Lightly dip into the lime salt and twist. Gentle shake off excess. Set aside.
Place the remaining ingredients in a cocktail shaker. Fill with ice. Cover. Shake until your arm hurts (about 20 seconds.)
Strain margaritas over ice.
Garnish with 1 large ice cube, wedge of grapefruit, and sprig of fresh mint. Bottoms up!
Notes
To make lime salt: Finely zest a lime. Place lime zest in a mason jar, along with 1/2 C Maldón sea salt. Cover. Shake. Let sit for 12 hours to a full week. The longer it sits, the more intense the lime flavour will be. Use within 1 month.
To make ginger simple syrup: Place 1 Tbsp freshly grated ginger, 1 C water, and 1 C white sugar in a small pot over medium heat. Stir regularly until warmed through and sugar has dissolved. Cool completely before using. Strain to remove ginger. Store in fridge and use within 2 weeks.
Recipe by She Eats at https://sheeats.ca/2018/02/national-margarita-day-pink-grapefruit-margaritas/