Amish Cooked Salad Dressing

Ingredients

 * 1 egg
 * 1 cup water, plus
 * 1 tablespoon water
 * 2/3 cup all-purpose flour
 * 2 teaspoons dry mustard
 * 2/3 cup sugar
 * 1/2 cup apple cider vinegar
 * 3/4 cup vegetable oil
 * 1 tablespoon lemon juice

Directions

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