degrease a bowl with half the lemon and dry with kitchen towelette

split the eggs and put the eggwhites into the degreased bowl and the yolks in another bowl

sift the flour above the bowl with the egg yolks

add the milk to this bowl to and whisk until a smooth batter

whisk in the cinnamon and sugar

in the other bowl beat the eggwhites until stiff and gently spoon through the other batter

melt some butter in a skillet and put four heaps of about 8 cm across in the skillet

bake for about 5 minutes total until golden brown serve warm