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.
You can leave the flank steak whole, or you can cut it into one or two long strips (cut with the grain down the length of the steak). Slices from the whole steak are great for sandwiches or topping of salads; skinny strips are nicer for things like fajitas and burritos.