Combine the tequila, triple sec, lime juice, and blood orange juice in a cocktail shaker. Fill with ice and shake vigorously for 15 seconds.

Strain over ice into chilled glasses rimmed with turbinado sugar. Garnish with lime wheel and get ready to make a second batch.

To sugar (or salt) rim your glasses, run a lime wedge lightly over the rim of each glass and dip into a bowl with a few tablespoons of sugar in it. Allow a few minutes to dry before pouring drinks.