1cup(240 ml) tequila blanco/silver (reposado also works)
juice from 1 large lime
1/2teaspooncoarse saltplus extra for rimming the glasses
In an electric blender, blend the frozen pineapple, pineapple juice, tequila, lime juice, and salt until smooth with no visible pineapple chunks.
Run a lime wedge around the rim of the glasses and invert upside down on a shallow bowl/saucer filled with coarse salt. Twist the glass and move it around, making sure salt flakes are sticking to the rim.
Pour margarita mix into glasses, dividing equally.