I tried my hand at this vintage broth, expecting a simple, rustic affair. But what I found was a delightful, comforting soup that belied its humble ingredients. The cow-heel, simmered for hours, yielded a rich, gelatinous broth that was surprisingly luxurious. I was particularly charmed by the oatmeal "knots"—a clever, rustic alternative to dumplings that soaked up the broth beautifully, adding a pleasant texture. This recipe is a treasure for the weeknight cook who craves something hearty and warming. The long simmer time means it's best made on a day when you're pottering about the house. Be sure to skim the broth occasionally to achieve that lovely, shiny surface. And don't be put off by the cow-heel—it's a bargain bin find that yields a remarkable amount of flavor. I served it with a splash of good vinegar, and it was a delight.