How to keep your skin looking younger and boost collagen production. You might not know what it is, but collagen production is key when it comes to keeping your skin looking young, plump and wrinkle-free. Get daily news by email. Collagen is a protein produced by our cells that helps âholdâ the skin together, keeping it looking younger and giving it firmness and elasticity. When weâre young, our skin stays plump and smooth because it constantly regenerates itself.
Where it's from: Flank steak is from the bottom abdominal area of the cow, so it contains a lot of hard-working muscles. The meat has a lot of tough fibers running through it and is fairly lean. It's a thicker, wider cut of meat than skirt steak.
Flank steak is a lean, somewhat tough but flavorful cut of beef that benefits from the tenderizing effects of a marinade. It is best cooked medium rare and thinly sliced at an angle across the grain of the meat.