Ingredients

2 medium yams
3 cups vanilla yogurt
1 cup milk
2 cups ice cubes
1 teaspoon white sugar
1 ripe banana, sliced

Directions

Prick yams with a fork, and place on a plate. Cook in the microwave for 8 to 10 minutes, turning once, until tender. Cool, peel and dice.

Combine the yams, yogurt, milk, ice cubes, sugar and banana in the container of a blender. Blend until smooth.