Amish Cooked Salad Dressing - cooking recipe

Ingredients

1 egg
1 cup water, plus
1 tablespoon water (divided)
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

Preparation

In a small bowl, beat the egg with 1 tbsp of the water;set aside.
In a saucepan, 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 (the dressing will be thick).
Add the egg mixture to the flour mixture and continue to cook for about 1 minute, stirring until the dressing has a mashed potato consistency and is off-white in color.
Remove from heat, cover, and cool completely.
Store in a covered jar in the refrigerator (will keep for several weeks).