Set out a wide, shallow bowl or plate and fill with a thin layer of salt.
Gently swipe the flesh of a lime wedge against the rim of the glass, and press the rim of the glass into the salt.
In a mixing tin half-filled with ice, add:
Cover with a mixing glass and shake until the tin is frosted.
Strain into the salt-rimmed rocks glass over fresh ice.
Garnish with a Lime Wedge to serve.