There’s no need to overcomplicate marinades. You simply need a tenderizing agent, which can definitely multi-task as a flavoring agent. That’s right, Guinness is a double agent. And it also loves mustard. Two cats out of the bag right there.

You can use another stout, but I love Guinness’ mellow sweetness and lighter carbonation. It should go without saying that actual step 1 is drinking the other half.