01 -
Toss the lemon juice and sugar into a 7-8 cup capacity blender. On the smoothie or milkshake setting, run it at a low speed for 30 to 45 seconds to mix and dissolve everything together.
02 -
While the blender is still on low speed using the same setting, trickle in the cold water gradually. Let it blend for 10 to 15 seconds until it's all combined nicely.
03 -
Dump all 6 cups of the vanilla ice cream into the blender. Put the lid on and pulse gently on low until the ice cream combines with the liquid. If you’re using the food coloring, add it now and blend briefly until smooth.
04 -
Immediately transfer the creamy lemonade into serving glasses. Add slices of lemon on top if you'd like, and serve it right away with straws for sipping.