– Place meat in a glass bowl and stir in the lime juice. Cover with plastic wrap and place in the refrigerator for 4 hours.
– After 4 hours, drain all the liquid from the bowl. Make sure to drain as much as possible.
– Gently mix in the red onions, serrano peppers, tomato, and cilantro. Stir with a fork carefully.
– Pour in the Kikkoman soy sauce and Worcestershire sauce, and mix again. Season with salt and pepper. Serve over corn tostadas or saltine crackers.