Wild boar meatballs

Ingredients

• 1 tbsp olive oil
• 1 onion, finely chopped
• 1 garlic clove, finely chopped
• 600g minced wild boar
• 4 anchovy fillets, finely chopped
• 100g breadcrumbs
• 1 egg
• 50ml milk or single cream
• 1/2 tsp allspice
• 1/4 tsp nutmeg
• fresh dill, to serve
• 1 tsp salt
• freshly ground black pepper
• For the gravy: 25g butter
• 25g flour
• 100ml white wine
• 500ml well-flavoured beef stock
• 2 tbsp single cream
• 1 tbsp lingonberry jam (or redcurrant or cranberry jelly), plus extra to serve