Fill a blender with 2 cups of ice
Add 1 cup of cold juice, soda, or flavored drink
Add 1 to 2 tablespoons of sugar or simple syrup if needed
Add a few drops of food coloring if desired
Blend until the mixture is smooth and slushy
Add more ice for a thicker slushie
Add more liquid for a thinner slushie
Pour into a glass immediately
Serve with a straw or spoon
Freeze the drink for 10 to 15 minutes if you want it colder before blending