Steak And Pickled Celery Sandwich

A great sandwich packed with nutrition when time is not on your side.  Prepares in 10+ minutes, cooks in 10 minutes.  Serves 1-2Ingredients:1 sirloin steak1/4 cup coriander seeds2 stalks of celery + any leaves1/3 cup sherry vinegar1 tablespoon vegetable oil1 half ciabatta 2 tablespoons mayonnaiseDirections: Pat off any excess moisture from the steak using kitchen paper towel, then season with salt then set aside.  Heat a heavy bottom frying pan over medium heat and toast the coriander seeds for 1 to 2 minutes until fragrant, then roughly crush.  Finely slice the celery diagonally then add it to a small bowl with the coriander seeds, sherry vinegar, and a generous pinch of salt.
In the same skillet of high heat aadd the oil.  Once the pan is very hot, fry the steak 2-3 minutes on each side until browned and medium rare.  Rest for 5 minutes.
Halve and toast the ciabatta.  Pour any steak juices into the mayonnaise, then spread on the toasted ciabatta.  Slice the steak and pile in the sandwich with the celery and any leaves.