Low-Fat Buttermilk Dressing

• 1 1/2 tablespoons cornstarch
• 3/4 teaspoon dry mustard
• 1 teaspoon sugar
• 1/2 teaspoon salt
• 1 cup well-shaken low-fat buttermilk
• 1 large egg
• 1 1/2 tablespoons fresh lemon juice
• 1 tablespoon extra-virgin olive oil

1. Whisk together cornstarch, mustard, sugar, salt, and 1/4 cup buttermilk in a small heavy saucepan until smooth.
2. Whisk in remaining 3/4 cup buttermilk and egg until smooth.
3. Cook over moderate heat, whisking constantly, until mixture reaches a simmer, then simmer, whisking constantly, until thickened and custardlike, 4 to 6 minutes.
4. Remove from heat and whisk in lemon juice and oil.
5. Transfer dressing to a bowl and chill, its surface covered with wax paper, about 1 hour.

cornstarch, dry mustard, sugar, salt, wellshaken, egg, lemon juice, extravirgin olive oil

Taken from www.epicurious.com/recipes/food/views/low-fat-buttermilk-dressing-109554 (may not work)