Shake all ingredients and pour into rocks glass.
Add 2 cilantro-infused 1X1 ice cubes. To make, add boiling water to 1X1 ice cube molds and add a leaf of cilantro so it freezes inside of the ice cube. As is melts it releases more flavor and aroma.
Garnish with 2 serrano horns on rim of glass, made by cutting the stem off serrano peppers and slicing them down the center.
Add sprinkle of sal de gusano over ice cubes.
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So many pepper choices, so many qualities: heat, fruitiness, piquancy, sweetness, pungency, aroma and vibrant color