Derrick's Spice German Potato Salad

Boil potatoes in their jackets until tender, then cool slightly and cut into cubes.

Fry bacon until crisp, remove, and crumble over the potatoes.

Cook onion briefly in the bacon drippings.

Whisk vinegar, salt, pepper, sugar, celery seed, water, and beaten egg together.

Stir the dressing into the skillet and cook gently until slightly thickened.

Pour warm dressing over potatoes and bacon, tossing carefully to coat.