First, prepare your glass by brushing the outside of the rim in honey and rolling it in coarse sea salt.
In a shaker, combine the tequila, Cointreau, simple syrup, 8 fresh blackberries, juice of one lime, and 6-8 sprigs of fresh cilantro cut or chopped into small pieces.
Use a muddler to crush the blackberries into the shaker til it's all just one, big, mushy mess.
Add ice and shake-shake-shake! Strain your drink into your glass with ice.