Whisk eggs and sugar with a mixer to increase the volume up to four times about 5 minutes. Sift flour through a sieve and add to the mixture. Whisk until smooth.
Preheat oven to 400°F (200°C). Cover a baking tray with baking paper and cover with a thin layer of mixture. Bake about 10 minutes until golden brown. Do not overdo it!!! During baking, do not open the oven to for volume of the roulade.
Cooked cake, carefully, without removing from the baking paper, put on a kitchen towel and roll it. Wrap only warm cake to prevent crack. Place it seam side down. Leave to cool. The cooled cake removes from the baking paper. Spread the surface with blueberries jam. Carefully roll it, the shortest end to the shortest end, using the paper to help you. Cut it and serve it. Enjoy your meal!!!