Fill a highball or rocks glass with ice cubes and set aside to keep cold.

Place the sliced fresh strawberries in a cocktail shaker and gently muddle with the back of a spoon 3 to 4 times to release juice.

Pour 2 ounces silver tequila into the shaker with the muddled strawberries.

Add 1 ounce fresh grapefruit juice and 0.5 ounce fresh lime juice to the shaker.

Pour in 0.5 ounce strawberry pucker or strawberry liqueur and 0.5 ounce simple syrup.

Fill the shaker three-quarters full with ice, close tightly, and shake vigorously for 10 to 15 seconds until the outside is frosty.

Use a strainer to pour the cocktail into the prepared ice-filled glass, leaving strawberry pulp behind.

Garnish with a fresh strawberry and a slice of grapefruit on the rim, then serve immediately.