Aebleskiver is a delicious treat. In America, they're probably considered more like a pancake, but across the ocean it's a Danish pastry. Several years ago, the Danish would eat these with a piece of cooked apple inside.
How were they made? They were made because of the Vikings. The Vikings would heat up their shields over the fire and pour the batter on top of their shields and turn them, creating a perfectly round Aebleskiver.
When I first made Aebleskivers, they were very intimidating to make. Then I got the hang of it by batch two. I served mine with homemade strawberry jam, sprinkled with confectioner sugar. My children demanded more of me in the kitchen because they couldn't get enough of this delicious and scrumptious treat.
Heat the milk, but do not allow it to boil. Work butter and sugar together until creamy, add the beaten egg yolks, then the milk and yeast. Sift salt and flour. Add to the mixture while beating hard. Lastly fold in the stiffly beaten whites of the eggs. Cover the batter and set in a warm place to rise until light.
Place well greased cast iron Aebleskiver pan over eye off the stove on medium heat. While hot, pour in batter in each compartment. Take a chopstick, and gently slide upwards, allowing the batter to pour out. On the opposite side, slide in the opposite direction. Eventually the batter will start turning into a sphere. The outside of the Aebleskiver will be brown, while the inside will remain hollow. Take the Aebleskiver out, and place on a serving dish. Spoon strawberry jam over the dish, and sprinkle with confectioner sugar. This video is a great demonstration in how to make Aebleskivers.
They work perfectly with an Aebleskiver cast iron pan because they'll have more crisp sides and brown perfectly.