MAKE MINT SIMPLE SYRUP. Add water and sugar to small pot and bring to boil. Once boiling, add mint leaves and remove from heat. Cool completely and then discard mint leaves. (You can do this the day before and store the simple syrup in the fridge!)
RIM GLASSES. Mix together equal parts salt and granulated sugar. Wet glass rims and dip edges in salt sugar mixture. I typically just wet glasses with water, but depending on the type you're using a simple syrup or agave sweetener could also work as a sticky rim adhesive.
MAKE COCKTAIL. Blend lime juice, orange juice, simple syrup, fresh strawberries and ice until smooth. Strain into rimmed glasses.
GARNISH. Feel free to garnish glasses with a slice of strawberry, lime or a mint leaf!