Take a large freezer bag or covered container.
Put in a goodly amount of diced and smashed garlic and ginger. Add in a bit of soy sauce, chinese rice wine vinegar, and two or three spoons of chinese crush chili paste. Stir this mixture up, it will be very thick.
Take your steak, and make sure you cover both sides of it with the mixture. You will likely have to cover one side, then flip it over. Seal the container and refrigerate for 6 hours or longer.
Heat a grill pan or similar to a fairly high heat. Place the steak in the pan. It will almost certainly smoke. Cook the outside quickly, turn over, and then place the pan and steak in a 300 degree oven until desired doneness on the inside is reached (use a meat thermo to get what you want).
Your steak will be juicy, it will be tasty, and it will be spicy as a mofo.
Enjoy.
(You can use this same technique on a roast beef or similar. The taste is amazing, but very spicy. Cafeful on the chili paste
