Line each glass with salt if desired. I put out two plates, one filled shallowly with water, the other with salt. I dunked each glass in the water, then quickly into the salt. Set aside till needed.
For the Simple Syrup:
In a medium saucepan mix 1 ¼ lb. sugar with 16 oz. of water, cook while stirring occasionally over medium heat until the sugar dissolves. Refrigerate. This will last for 24 hours.
Squeeze juice from halves of lime, orange, and lemon into a quart container and add remaining half of the simple syrup to the fruit juice. Then refrigerate the mix. These two mixes will last for 24 hours.
Blend each fruit, ice, and two ounces of simple syrup separately until thick. Store separately in bowls. These three mixes will last for 2-3 hours.
Putting it all together:
Blend the margarita mix, and some ice in a good blender until thick.
Now scoop about two teaspoons of each fruit ice in the bottom of your chilled Martini glass. I like extra strawberry in mine so I use that as the base then use all three fruits randomly on top.
Now top the fruit ices with the thick margarita mix.
You can now add a splash of Sprite over top.
Place lime,orange and lemon wedges on the rim for garnish.