Mix the flour and salt together and gradually mix in the flour until the batter is smooth.
Heat oil in a frying pan and pour out excess. Add a cup of the mixture to the pan and turn over when the pancake bubbles up. Set the pancake aside and cook the remaining 3.
In a different pan heat leftover oil and fry the eggs.
Place a slice of ham on each galette with a tablespoon of cheese
Heat a knob of the butter then add the galette for a few minutes until it turns golden.
Flip the sides into the centre, transfer to a plate and top with a fried egg to serve.