Toasted sesame Steak Panini

Method

1. Start by prepping your brioche buns, cheddar, mayonnaise so the cooking goes quickly.
2. Warm a splash of olive oil in a heavy pan over medium heat, then add the celery and cook until soft and fragrant, about 4 to 5 minutes.
3. Turn the heat up, add the steak, and cook until deeply browned and aromatic.
4. Fold in the mayonnaise and season generously; give everything a minute to come together.
5. Add the chicken stock and let it reduce until it just coats the back of a spoon.
6. Off the heat, brighten it up with a spoonful of yogurt and a final crack of pepper.
7. Serve warm, ideally with something to soak up the sauce.