Peel and cut potatoes into medium chunks.
Wash the chunks of potatoes to remove the starch and boil them until soften.
While waiting, mince the onion.
Melt the butter in the pan and sauté the onion until soft. Add ground beef and cook until done. Season with salt.
When the potatoes is soft, drain and mash them while hot
Peel the egg and roughly mince them
In the bowl of mashed potatoes mix chopped eggs and cooked meat. Mix them together.
Shape the mixture into balls.
Coat each piece with flour one by one.
Dip in beaten egg.
And coat with panko.
Put the croquette into the container and stored in the refrigerator for later.
Fry the croquette in oil at medium heat and cooked until golden brown.
Place the croquette with paper towel to remove excess oil.
Served it while hot