In a large glass pitcher mix together the first 5 ingredients until the limeade is completely melted and all the ingredients are well combined.Pro Tip: You can use the emptied limeade can to measure the tequila and the soda.
Rim Garnish
On a flat plate mix together the sugar and kosher salt.
Serving
Rub the rim of each glass with a wedge of lime or grapefruit. Tap the rim of the glass into the sugar/salt garnish plate. Making sure to cover the entire rim of the glass. Add ice to the glass. Squeeze a grapefruit wedge into the glass, and leave the wedge in the glass. Pour the Grapefruit Margarita into the glass and serve. Pro Tip: You can add ice to the pitcher if you are serving the entire pitcher immediately. Otherwise add the ice to each individual glass. That way the pitcher of Grapefruit Margaritas will not get watered down.
Video
Notes
Make Ahead: If you plan to make your pitcher of grapefruit margs ahead of time. Add the limeade, tequila and grapefruit juice to the pitcher. Pop it in the fridge for a couple hours. Right before serving add the soda and beer. Less Sweetness: Choose one of the three options below to lessen the sugar in your grapefruit margaritas.
Top each glass off with a little grapefruit flavored soda water. Doing this will allow each person to decide their level of sweetness without diluting the pitcher.
Add a 12 oz can of grapefruit flavored soda water to the pitcher. This will change the flavor of the pitcher (and the strength of the margs), so maybe add half the can then give it a taste and then add more as desired.
Replace the Squirt soda with a 12 oz. can of grapefruit soda water.