Cake roll with cherry jam

ingredients:
150 g Sugar
1 egg
 4 Yellow
4 egg whites
150g flour
1 jar of cherry jam
method:
1. Mix the sugar, egg and 4 egg yolks and beat them with a whip. Add the flour. Mix well.
2. Beat the egg whites until stiff 4, using a whisk. Mix in a third with the previous preparation to soften the texture. Then gently stir in remaining with a spatula
without breaking the whites.
3. Divide the dough on a baking paper-lined plate. Bake about 10 minutes in the preheated oven at 180 ° C.
4. At the exit of the oven, unmold the cake onto a clean damp cloth and roll it on itself, with the cloth.
5. Unroll the cake. Spread cherry jam. Roll back the cake. Cut two coves and brush with cherry jam.
http://www.odelices.com/recette/gateau-roule-a-la-confiture-de-cerises-r2735/