Blackberry Margarita

This was my "signature" drink up at the lake this year.  I liked it, but it might be a little sweet for some.  Go easy on the simple syrup and add more, if necessary.

Margarita 6-8 blackberries 1 oz. simple syrup 1 oz. blanco tequila ½ oz. Cointreau ½ oz. lime juice 1 lime wedge Glass Rim Mixture 1 1/2 tablespoons granulated sugar 1/2 teaspoon kosher salt Makes enough for several...

Muddle the blackberries.  Add the simple syrup and mix. Strain into shaker filled with ice. Add remaining ingredients, except lime wedge and shake. Pour over ice-filled glass rimmed with sugar-salt mixture.  Add a lime wedge to the rim.