Mix with grated horseradish, chopped parsley, mayonnaise and crème fraîche, season with salt and pepper.
Peel and thinly slice the onions. Then, heat up about an inch of oil in a large, deep pot. Once hot (over medium heat), add the onion and allow them to fry until browned and crispy (2-4 minutes). Stir occasionally to make sure they’re frying evenly. When ready, remove the onions from the oil and place them over a layer of paper towel to absorb any excess oil (optionally blot the top with a second sheet).
Take the bread and put reindeer mix on top. Garnish with fried onions.
Put one tbsp of Kalix Löjrom on top of each Smørrebrød.