Use a wedge of lime to wet the rim of a glass and dip in either sugar or salt.
Add berries and simple syrup to the glass and muddle.
Stir in lime juice and tequila.
Top with ice and garnish with fresh berries if desired.
Note: If the seeds from the blackberries bother you simply strain through a sieve before serving.
Note: To make a large batch of simple syrup just combine equal parts sugar and water. I do 1/2 cup water 1/2 cup sugar. Keeps in the fridge for up to a month.
Notes
Original recipe from chefsavvy.com. Please do not publish my recipe or pictures without linking back to the original post. Thank you!