This is far lower in fat, saturated fat and cholesterol than the real thing, but you'll hardly notice a difference in taste or texture.

1 cup low-fat cottage cheese
2 tablespoons lemon juice
2 tablespoons low-fat mayonnaise
1/4 cup buttermilk
Zest of 1/2 lemon

Put all the ingredients in a blender or food processor and mix until creamy smooth.

Makes 1 1/2 cups.