Darkorpse 0. Not sure if we're thinking of the same waxy shine, but to me that's normally a bad sign and an indicator of heat stress. If a leaf is shiny, it is reflecting more light than necessary, and will lower the rate it can absorb light at and negatively affect it's health.
1 PREHEAT oven to 250F. Place steaks on a rack over a baking sheet. 2  Rub with 1 tbsp oil and season with salt and pepper. 3  Roast steaks in the centre of the oven for about 20 minutes for medium-rare. 4  Remove from oven.HEAT oil in a medium skillet over high heat. Add steaks and sear until deep brown and crisp, about 3 minutes a side. Hold the steak on their sides and cook the edges for 1 min per side.Remove to rack and let rest for 10 min.oast steaks in the centre of the oven for about 20 minutes for medium-rare. Remove from oven. HEAT oil in a medium skillet over high heat. Add steaks and sear until deep brown and crisp, about 3 minutes a side.
Coat the flank steak with marinade: Place the steak in a shallow dish, like a 9x13-inch baking dish. Whisk together all the marinade ingredients and pour over the steak. Rub the marinade into the steak and flip the steak once or twice in the dish to coat.Marinate for 1 hour or up to 24 hours: Cover the dish and place the steak in the fridge for at least 1 hour or up to 24 hours.he Best Way to Cook Flank Steak. You can grill flank steak, cook it in a skillet on the stovetop, or even cut it up for a stir-fry, but my choice for everyday cooking is under the broiler. The broiler is basically an upside-down grill that blasts the steak with direct heat.