The Original Perfect Margarita Recipe

Pour enough salt on a small plate to cover. Rub lime wedge on the outside rim of a 4-ounce cocktail glass. Holding the glass at a 45-degree angle, dip the outside rim in the salt, rotating as you do, so the entire rim is coated with salt. (Avoid getting any salt inside the glass.) Fill the glass with ice. Fill a cocktail shaker with ice. Add tequila, triple sec, and lime juice. Shake vigorously until the shaker turns frosty. Strain into the glass and garnish with a lime slice.