Heat water and 1 1/2 cups of sugar until sugar is dissolved.
Add Lemon Juice, Guar Gum and Citric acid. Stirring constantly until loosely thick
allow to cool
In a blender add 1-2 cups of ice and abour 1/4 cup of your thickened lemon mixture
Add 1 cup of fruit juice
Blend until all the ice is crushed and smooth
Here you will add additional sugar to tast, this will depend on your choice of fruit but I start with 1/2 cup of sugar.
Blend the additional sugar in and add your 1/2 cup of fresh fruit, blend again.
At this time you should taste your mixture and make adjustments to suit your palate. I like my italian ice very tart so I add the additional 1/2 tsp citric acid although you may choose not too.
Also now would be the time to add fresh mint or lemon zest if you enjoy the flavor included in your Italian Ice.
Pour your ice mixture into a freezable plastic container and put in the freezer until frozen.