Margarita Bucket Does Anyone Know What Ratio To Mix My Own Frozen Margarita Bucket So It Will Freeze But Remain Slushy?

Does anyone know what ratio to mix my own frozen Margarita bucket so it will freeze but remain slushy? - margarita bucket

I like the cube of Frozen Margarita, where a liter of tequila to the mixture of stock and in the freezer. I use the bottled margarita mix commercial and if so, what link should be used (3 parts mix to 1 part tequila?)