The acidity in the dough can react with certain metals, like copper and aluminum, giving bread a metallic taste, so the only type of metal bowl you should proof your dough in is stainless steel.

Black Sabbath, Twisted Sister, and Quiet Riot were all featured in national commercials aired during last night’s Super Bowl — but by far, the most metal ad of all only ran in Savannah, Georgia.

Cover with foil. Skim off the fat from the stock collected in the bowl using a large metal spoon. Pour the stock into a clean saucepan, stir in the fish sauce and place on a gentle simmer.