The five duos on the losing team from the previous challenge face the first Pressure Test of the season. The pairs enter the MasterChef kitchen to find a Mystery Box with a mallet inside. Gordon reveals the Mystery Box IS their ingredient. The box is made completely out of chocolate! In this first dessert challenge of the season, each duo must smash up their box and use the chocolate to make a stunning sweet dish to avoid elimination. (thetvdb.com)