In a large bowl, sift flour and add baking soda and salt.
In a separate bowl, mix baking powder and milk.
Combine dry ingredients with milk and baking powder and stir well with a whisk until the batter is very smooth without clumps.
Add melted butter into the batter and mix well for a few seconds.
Before putting the griddle on top of the stove, spray it with cooking spray or dampen a paper towel with oil and rub into the griddle surface to grease it. Heat the griddle on medium-high.
With the help of a ladle-spoon, pour 1/8 of the batter onto hot griddle to form each griddle cake.
When each cake is brown on the bottom and starts to bubble on the top, flip to cook other side.