Basilio and Leonidas were welcomed to Brussels with open arms. At night Basilio prepared his delicious pralines in a small workshop near the Grand-Place, and in the morning he crossed through the city with a horse and cart to sell his delights to a loyal clientele.

Everything was running smoothly until Basilio got into trouble for street trading – the police told Basilio that he had to sell his products in a shop. Basilio rented a room in a building at Boulevard Anspach 58, which was small and narrow and didn’t even have a door onto the main street. But Basilio wouldn’t be Basilio if he didn’t have a solution. He displayed his delicious pralines on the window sill and sold them from the sliding sash window to passers-by – a revolutionary idea! Basilio sold up to 35 kg of confectionery a day directly from the production workshop to the counter, without losing any of the freshness or time – and at half of the price of his competitors.

This was the start of selling through a sliding sash window, which later became the trademark of Leonidas.