Lightly fry the sliced ham in a pan.

Beat the eggs with a pinch of salt and strain to remove egg threads.

Heat a pan with a small amount of cooking oil and cook the egg mixture into a thin omelet.

Mix condensed milk and butter to create a condensed milk buttercream.

Spread mayonnaise on two slices of bread and place the omelet on top.

Spread the condensed milk buttercream on top of the omelet and cover with another slice of bread.

Spread condensed milk buttercream again on top of the bread.

Place cheese on one side and two slices of ham on the other, then stack them together.