Cabbage is delicious, nutritious, cheap, and highly underrated. You can shred it and add some vinegar and mayonnaise for a refreshing coleslaw, or caramelize it in butter for a savory side to a well-cooked roast meat, as I’ve done here. And speaking of well-cooked meat, here’s a small caveat: be careful not to overcook the pork. A dry, overcooked tenderloin is a sad prospect. A juicy tenderloin, cooked to a medium temperature, as instructed in this recipe, is just right.
In a small pan on low heat, lightly toast the fennel and coriander, tossing constantly, until they take on some color and become fragrant, about 3 minutes.
Transfer to a plate to cool.
Crush the toasted spices and the peppercorns using a mortar and pestle, then spread them on a cutting board.
If you don’t have a mortar and pestle, crush them by pressing down and forward firmly with the bottom of a pot.
Rub the tenderloins with olive oil, then roll them in the spices to coat on all sides.
Cover with plastic wrap and marinate in your refrigerator for at least 1 hour, or better yet, overnight.
Preheat your oven to 350°F.
Remove the tenderloins from your refrigerator and let them come to room temperature before roasting.
Remove the outer leaves of the cabbage and slice it in half.
Leaving the core intact, slice each half lengthwise into 1-inch-wide planks.
Set aside.
Heat 1 tablespoon olive oil in a large ovenproof pan on medium heat.
Sprinkle the tenderloins with a couple generous pinches of salt.
Sear, turning until they’ve browned on all sides, about 5 minutes total.
Transfer to your oven and roast until the pork is cooked to medium (about 145°F), 9 to 11 minutes.
Set aside on a plate, covered with aluminum foil, to rest for 20 minutes.
Meanwhile, melt the butter in a medium pan on medium heat.
Once melted, turn the heat to low and add the cabbage in one layer.
Add the thyme, garlic, and a pinch of salt.
Cover and let the cabbage caramelize without nudging until the pieces are soft and nicely browned, about 20 minutes.
Carefully flip the cabbage onto a serving plate to expose the browned side.
To serve, cut the pork horizontally into ¾-inch-wide slices and arrange next to the cabbage, pouring any juices that have pooled over the top.