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.
Step 2. Marinate your flank steak in a food-safe plastic bag or stainless steel bowl to make it tender and flavorful. Use approximately Â¼ cup of liquid marinade for every pound of flank steak and let it soak for six to 24 hours before cooking.Use a pre-made marinade or create your own.lace the pan on the oven rack you placed close to the heat source. Turn the flank steak only one time during cooking, at the halfway point. Use tongs instead of a utensil that pierces the meat and releases its natural juices, which will leave you with a drier piece of beef.