Combine eggs,eggyolks,sugar,salt and lemon peel in a mixing bowl and beat in a Bain Marie with a hand whisk till warm and fluffy.

Remove from brain Marie and continue beating until stiff and cold.

Finally fold in flour.

Melt the butter and add it to the mixture.

Pour the mixture to a greased and lined baking tray.

Bake for 10-15 mins depending on temperature of the oven.

Once ready work on it immediately according to particular recipe