- Prepare the sesame mayonnaise by mixing mayo with the sesame oil and lime juice. Season with salt and pepper. Set aside.
 
 
 
- Mix all ingredients for the beef marinade and pour into a plastic bag. Add the beef and marinate for 15 minutes or more at room temperature.
 
 
 
- Chop all vegetables for the salad, except the scallions, into bite-sized pieces. Divide between two plates.
 
 
 
- Heat a medium frying pan over medium heat. Add sesame seeds to the dry pan, and toast them for a couple of minutes, or until they’re lightly browned and fragrant. Set aside.
 
 
 
- Pat the meat dry on both sides with paper towels. On high heat, sear for a minute or two on each side, and then reduce heat to medium low, cooking until beef is medium, and then transfer to a cutting board.
 
 
 
- Fry the scallions for a minute in the same pan.
 
 
 
- Slice the meat, across the grain, into thin slices. Place beef and scallions on top of the vegetables.
 
 
 
- Top with roasted sesame seeds and serve with a dollop of sesame mayonnaise on the side.