Wash potatoes very well without them white. Place them in a buttered baking dish. Mix soy sauce, honey, lemon juice, ketchup, salt and pepper. Pour over potatoes prepared sauce, and melted butter. Bake in pre-heated oven at 200C for 1 hour during baking pour potatoes with sweet and sour sauce until ready. After removing them from the oven, sprinkle with herbs and optional garnish with dill.