1. Using a cocktail shaker, muddle a couple of jalapeño slices with the agave syrup in the bottom of the shaker. The amount of jalapeño coins you muddle depends on how spicy you would like your margarita.2. Pour the tequila, lime juice, and triple sec into the shaker, fill with ice, and shake. Make sure to shake long enough for your spicy concoction to get chilled.3. Rub the rim of your empty margarita glass with a lime wedge. Then dip in a small plate of coarse sea salt. Fill with ice.4. Strain your spicy margarita into your ice filled, salt-rimmed glass.5. Garnish with lime slices and jalapeño coins.6. Enjoy, and please drink responsibly!