Mix flour and baking soda in a bowl.
In another bowl, whisk eggs, sugar, and honey together. Add milk and mix well.
Stir dry ingredients into egg mixture, and whisk until batter becomes smooth.
Heat non-stick frying pan with a small amount of oil and wipe excess oil well. At medium low heat, drop 1/8 of a cup of batter onto the pan, like a pancake. Cook about 2 minutes until the surface of the pancake has a lot of bubbles and the edges become dry. Flip over and cook 1 more minute.
Transfer to a plate and cover with a wet paper towel.
Take one cake and place a heaping tablespoon of Anko and cover with another cake. Wrap it with plastic and press with hands. Pinch to seal the edges of the pancakes together.