2 (8 oz.) cartons plain yogurt
1/3 c. lemon juice or to taste
1/4 c. sugar
2 tsp. ground cinnamon or taste
3 c. milk
1 c. cubed canteloupe
8 1/4 oz. crushed pineapple, drained

Combine yogurt, lemon juice, sugar and cinnamon in a blender. Stir in milk, cantelope and pineapple. Blend until smooth. Chill.