Put the salt on a shallow plate and dip the glass in the salt to coat the rim.
Add a few ice cubes and squeeze the rest of the lime into the glass.
Pour in the beer and stir gently.
Variations: To the salt, add ¼ t. ground chile piquín, Thai chili or cayenne pepper. To season the beer, add any of the following, or a combination, to taste: Maggi Seasoning, Worcestershire sauce, soy sauce, liquid chamoy or bottled hot sauce.