Rim the glass with lime juice, then dip into salt or sugar. You can choose your preference based on your taste.
Add fresh raspberries to a blender along with tequila, triple sec, lime juice, and agave syrup. Blend until smooth and well combined.
Use a fine mesh sieve to strain the mixture, removing any seeds from the raspberries. This ensures a smooth consistency.
Fill a cocktail shaker halfway with ice, then add the strained raspberry mixture. Shake well until the mixture is chilled.
Pour into your prepared glass, and garnish with a lime wedge for a bright, citrusy finish.