Frozen Margarita

Tip: click step to get into cook mode

In a small saucepan, add the sugar and water. Mix and place on low to medium heat and bring to a simmer. Cook for about 5 minutes, until it has thickened and you cannot see any sugar left.
Turn off the heat, and set it aside. Let simple syrup cool to room temperature (or store in the fridge) before using.
Place your tajin or salt onto a flat small plate.
Use a wedge of lime to moisten the rim of your glasses. Dip the edges of the rim of the glass onto the plate with tajin or salt. Set aside.
Place your lime juice, Tequila, Cointreau, simple syrup, and ice in a blender. Blend until smooth.
Serve immediately and garnish with mint or extra lime slices or a floater - an extra shot of tequila on top!