Game burger, root vegetable slaw, lemon-pickled red onions, and roasted root vegetables

Ingredients

• 4 game burger patties (make the patties from reindeer or red deer meat with this recipe for example )
• 600 g of root vegetables, e.g., potatoes, carrots, parsnips
• 3 fresh rosemary sprigs
• Salt
• black pepper
• Oil for frying
• Bread for serving
• 2 red onions
• 1 tbsp lemon juice
• 2 tsp hone
• 1 tsp vinegar
• 150 g carrots
• 150 g swede
• 100 g celeriac
• Half an apple
• 1 dl mayonnaise
• 3 tbsp creme fraiche
• 2 tsp Dijon mustard
• Salt, sugar and black pepper
• 1 dl ketchup
• 2 tbsp thawed lingonberries