Бисквит Для Рулетов ✧ Школа Домашнего Кондитера ✧ Sponge Cake for Rolls (English Subtitles)

For a standard 30x40 baking tray:
80 g of all-purpose flour
4 small eggs
60 g of sugar
65 g of milk
50 g of vegetable oil
a pinch of salt