To eliminate all knots, in a large bowl, sieve the flour and baking powder, then add the sugar, and mix.
Form a hole in the middle of the dry mix – like a volcano – and add the egg and half of the milk; with a fork or whisk, start incorporating the wet mix and dry mix together.
Once half of the wet mix is incorporated, add the rest of the milk to the bowl, and continue mixing with the fork until the batter is smooth and has no knots.
NOTE: Do not overmix the batter, but stop as soon as the ingredients arerall incorporated.
Add half of the blueberries and the lemon zest to the batter and give it a quick stir.
Put a large frying pan on the hob to warm up on medium heat and once warm, cover it with some cooking spray [or butter or unflavored oil].
Once this is warm, add three tablespoons of batter to the pan to create a pancake; each pancake should be about 4-5 inches [10-12 cm] in width.
NOTE: Add each tablespoon of batter on top of the other. This will make the batter spread slowly, but the pancakes will be extremely fluffy.
Keep cooking the pancakes on a low to medium flame.
After a 2-3 of minutes, bubbles will appear all over the surface of the pancake and the batter will start to thicken and cook through; at this time they are ready to be flipped.
Once flipped, cook on low heat for a further two or three minutes, until the batter is cooked through and through, then remove from the pan and set aside, covering with a clean teatowel to keep them warm and moist.
Repeat the same process for all pancakes.
Serve the pancakes with the remaining blueberries on top, enjoy!