Frozen Margaritas

Spread salt, if using, into even layer on small saucer. Moisten about ½ inch of 4 chilled old-fashioned glass or margarita glass rims by running lime wedge around outer edges; dry any excess juice with paper towel. Roll moistened rims in salt to coat. Remove any excess salt that falls into glasses; set aside.

Add tequila, orange liqueur, limeade concentrate, and ice to blender (in that order) and process until smooth, about 1 minute, scraping down sides of blender jar as needed. Pour into prepared glasses. Garnish with lime wedges and serve.