Now, the duxelles (fancy mushroom paste) is where most people screw up. They use button mushrooms, which are basically water balloons with a flavor identity crisis. You want cremini or porcini mushrooms, dried for extra umami. And you must, must, must cook the moisture out until the pan is dry. If you don’t, your Wellington becomes a mushroom soup trapped inside a pastry coffin. Nobody wants to eat a soup that sticks to your teeth.
Surprising fact: the original Beef Wellington was probably invented to show off how rich you were—because you could afford to waste expensive tenderloin by wrapping it in even more expensive pastry. It’s not food; it’s a flex. Like wearing a Rolex around your dinner plate.
