Sift the flour and salt into a large bowl. Add the remaining ingredients and use an immersion blender to fully blend. If you don't have an immersion blender, you can simply put all the ingredients together in a blender.
Let stand for 10 minutes.
Heat a non-stick frying pan or well-seasoned cast iron frying pan over medium heat. If you're clutzy, stick with a small pan and small pancakes. If you're feeling more confident in your pancake-flipping skills, scale up.
Melt 1 tsp butter into the pan and swirl the melted butter to fully coat the bottom of the pan. Pour roughly 1/2 cup batter into the pan and swirl the pancake batter to create a thin layer. Let the pancake cook until little bubbles appear throughout, then use a large spatula to flip the pancake. Let the second side cook another minute, until both sides are golden brown, then remove from the pan. Repeat with remaining pancake batter.
Notes
A sweet filling is de rigeur for Eierkuchen. Finished pancakes are traditionally served with apricot jam, apple sauce, or cinnamon sugar. A more American interpretation of these sweet pancakes might include maple syrup, or, if you're feeling extra naughty, a slathering of nutella, topped with vanilla ice cream.Leftover eierkuchen batter will keep well in the refrigerator for several days, unless your milk or eggs were on the brink of expiration.