Winter Beet Borscht

Yield:	8 Servings
Categories:

2	tb	Unsalted butter
1	lg	Onion, chopped
1/2	c	Thinly sliced celery
1/2	c	Coarsely shredded carrots
2	cn	(15 or 16 oz) julienne-cut beets, undrained
2	cn	(15 or 16 oz) ready-to-serve reduced sodium beef broth
1	lg	-or-
2	md	Baking potatoes, peeled, cut into 1/2" dice
1	c	Thinly sliced cabbage (or shredded coleslaw mix)
1/4	ts	Salt
1/4	ts	Freshly ground black pepper
3	tb	Brown sugar
2	tb	Tomato paste
2	tb	Cider vinegar
		Sour cream, optional
		Chopped fresh dill, optional