Rub the rim of a coupe or a margarita glass with a lime wedge

Put salt in a plate and rub the wet rim with the salt. Tap the rim of the glass upside down to remove the excess of salt

Fill the glass with ice to chill

Place <quantity>50<unit>ml</unit></quantity> of blanco tequila in a cocktail shaker

Add <quantity>20<unit>ml</unit></quantity> of Cointreau

Add <quantity>25<unit>ml</unit></quantity> of lime juice

Fill the cocktail shaker with ice cubes and shake vigorously for 20s to chill

Double strain into the chilled glass. The margarita is ready

Cheers, Salud!