It’s necessary as a outcome of it helps to fend off corrosion. The 10 refers back to the proportion of nickel within the piece. This additionally fights against corrosion and helps give your cookware a shiny finish. For this cause, we advocate stocking up on top quality foil from Reynolds. With two rolls and 500 sq. toes of excessive quality, inexpensive foil, you’ll be in a position to loosen up and get back cooking with out worrying about re-purchasing for a long time.