There is nothing better than a roast beef sandwich dipped in its cooking juices. For this variant, replace the brioche buns with baguette and prepare a quick ‘en-jus’ by mixing 1 pouch of dry onion soup with 350ml of water, add 1 tbsp. Worcestershire sauce, 1 tbsp. beef concentrate and freshly ground pepper. Simmer for 10-15 minutes and serve in bowls for dipping sandwiches.