1) Heat the pan and add the beef.
2) Season with some salt and pepper.
3) Let the beef cook on each side.
4) Then allow the beef to rest for some time.
5) Then slice the beef into thin strips.
6) Take some mustard and mayonnaise and rub on the strips.
7) Then top it with lettuce and vegetables.
8) Then roll the beef like a roll and tie it up.