In a large bowl, combine the ground pork and ground beef.
Add the finely chopped onion, minced garlic, breadcrumbs, and milk.
Crack the egg into the mixture and add the salt, black pepper, nutmeg, allspice, and parsley (if using).
Mix everything together until well combined. It’s best to use your hands for mixing to ensure even distribution of ingredients.
With wet hands, shape the mixture into small, round meatballs or patties, about 1.5 inches in diameter.
Heat the vegetable oil in a large skillet over medium heat.
Add the meatballs or patties to the skillet, making sure not to overcrowd them.
Cook for about 5-6 minutes on each side, or until they are browned and cooked through (internal temperature should reach 160°F or 71°C).
Remove the frikadeller from the skillet and drain on paper towels.
Enjoy your meal!