Russian Cabbage Borscht

Place sliced potatoes and beetroot in a medium saucepan over high heat; cover with stock, and boil until vegetables are tender. Remove potatoes and beetroot with a slotted spoon, and reserve stock.

Melt butter in a large frying pan over medium heat. Stir in onions, caraway seeds and salt; cook until onions become soft and translucent. Then stir in celery, carrots and cabbage. Mix in reserved stock; cook, covered, until all vegetables are tender, about 10 minutes.

Add potatoes and beetroot to the pan. Season with black pepper and dill. Stir in cider vinegar, honey and passata. Cover, reduce heat to medium low, and simmer at least 30 minutes. Serve topped with soured cream, extra dill and chopped fresh tomatoes.