Add jalapeño, agave and lime juice to a cocktail shaker or mason jar. Gently muddle jalapeño to release its oils. Fill shaker with ice.
1-2 fresh jalapeño slices,, ½ ounce agave nectar, ¾ ounce freshly squeezed lime juice
Add tequila, Cointreau and grapefruit juice to shaker. Cover and shake vigorously for 30 seconds.
1.5 ounces silver tequila, ½ ounce Cointreau, 2 ounces freshly squeezed grapefruit juice
Strain margarita into prepared glass. Serve immediately.
Notes
The sweetness of your grapefruit juice can make a difference in the flavor of your drink. In season fruit will be naturally sweeter. If you have really sour juice, you may need to add more agave syrup to balance the flavors. Taste the recipe as written first and then adjust if needed.
Not a fan of spicy flavors? This doesn't have to be a spicy margarita recipe. Just skip the jalapeño slices and the Tajin rim for a stronger grapefruit taste. Either way, this rocks marg is delicious.
Use Tajín seasoning instead of the salt/sugar/chili powder mixture to rim the glass.
Don't have agave syrup? You can swap in simple syrup for a similar flavor. Plus you can easily make your own simple syrup at home!
Shake, don't stir. The shaking process not only chills the drink, it dilutes it and emulsifies the citrus juices with the alcohol. The result is a bunch of tiny air bubbles, a frothy appearance and a super smooth cocktail.