Oxtail Soup with Farro and Root Vegetable

This soup uses a very simple technique that is time-consuming, to be sure, but requires very little attention and rewards you with loads of rich flavor. Consider this a Sunday afternoon on the back of the stove kind of dish. Although I use carrots, celery, celery root, and one of my favorite underutilized vegetables here—parsnips—you can use any variety of root vegetables that you have on hand or that look good at the market. Just be sure to use at least a few different kinds to lend real depth of flavor to the soup. I add the vegetables toward the end of cooking to keep the flavors bright and save them from turning to mush. Any leftovers will make Monday night dinner a snap, and the soup even improves if made in advance. Be sure to cool it properly in the fridge and taste for seasoning the next day. You may want to thin it with a little additional water if it’s too thick upon reheating.