Amish Cooked Salad Dressing

Ingredients

 * 1 egg
 * 1 cup + 1 tablespoon water
 * ⅔ cup all purpose flour
 * 2 teaspoons dry mustard
 * ⅔ cup sugar
 * ½ cup white vinegar
 * ¾ cup vegetable oil
 * 1 tablespoon lemon juice
 * 1 tablespoon minced dry onion

Directions

 * 1) In a small bowl, beat the egg with 1 tbsp of the water.
 * 2) Set aside.
 * 3) Whisk together the flour, mustard, and sugar.
 * 4) Then whisk in the remaining 1 cup water, vinegar, oil and lemon juice.
 * 5) Heat over medium heat for 1 minute, whisking continuously.
 * 6) Add the egg mixture to the flour mixture and continue to cook for 1 minute, stirring.
 * 7) Remove from heat, cover, and cool completely.
 * 8) Store in a covered jar in the refrigerator.