Lemon Frosty (chick-file copycat)

Regular Version Ingredients:
2 c. lemonade
  (1c. lemon juice concentrate +
   1 c. ice water + 3-6T sugar)
4 c. vanilla ice cream (1.75 quart container)
1-2c. Ice

Thicker version:
1 c. water
2/3 c. lemonade concentrate
1/4 c. sugar
5 c. vanilla ice cream
2 c. ice (16 cubes)

Lemon/Lime Version:
1 1/3 c. lemonade
    (2/3 c. lemon juice concentrate+
     2/3 c. ice water + 2T sugar)
2/3 c. limemade
    (1/3 c. lime juice concentrate+
     1/3 c. ice water + 1 T. sugar)
4 c. vanilla ice cream
1-2c. ice

Healthy Version:
3 c. Greek Yogurt
6 c. Ice cubes (30 cubes)
9-12 T. sugar (9T. if yogurt is sweetened)
9 T. lemon or lime juice concentrate
(or Fresh squeezed) 

Powdered Milk Version:

1c lemon juice 

1/2c powdered milk

1/4c sugar

3c ice