Studies have found that grape seed extracts may prevent the growth of breast, stomach, colon, prostate, and lung cancer cells in test tubes. However, there is no clear evidence whether it works in humans. Antioxidants, such as those found in grape seed extract, may help reduce the risk of developing cancer.
Poke the steak with a fork about 20 times per side. Liberally salt both sides of the steak to create a crust. Then coat both sides of the steak with marinade. Wrap well in plastic wrap and refrigerate for at least an hour, or up to 24 hours. To cook the steak: Heat the oven to 450Â° F (230Â° C, gas mark 8). Heat the vegetable oil in a 12 ovenproof skillet until the oil smokes. Wipe the marinade and salt off of the steak, and if you like, season with the black pepper. Put the steak into the hot skillet (stand back a bit in case the oil splatters). Sear the steak until browned, 3-4 minutes.
1 4 h 30 m.  Whisk olive oil, lime juice, cilantro, onion, garlic, cumin, salt, and black pepper in a bowl, and pour into a resealable plastic bag. Add steak strips, coat with the marinade, squeeze out excess air, and seal bag. Marinate in the refrigerator for 4 hours to overnight.