- 1 pound rhubarb, stalks only, sliced 1/2 inch thick
- 1/2 cup shallots, halved lengthwise and thinly sliced crosswise
- 1 1/2 tablespoons unsalted butter, melted
- 1/3 cup sugar
- 1 teaspoon minced thyme
- 12 2-inch thyme sprigs
- Kosher salt and freshly ground pepper
- 2 (3/4 pound) pork tenderloins, cut into 6 pieces each
- Light a grill. In a medium bowl, toss the rhubarb and shallots with the butter to coat. Stir in the sugar and minced thyme and season with salt and pepper.
- Tear off four 16-inch-long sheets of extra-heavy-duty foil. Mound half of the rhubarb mixture in the center of each of 2 foil sheets. Gently pound the thicker pieces of pork about 1 inch thick. Season with salt and pepper and press a thyme sprig onto each piece. Arrange the pieces of pork in a layer on the rhubarb. Cover with the 2 remaining sheets of foil; fold up the edges all around to seal.
- Grill the hobo packs over a very hot fire for about 12 minutes, or until sizzling and puffed. Using oven mitts, transfer the packs to a rimmed platter. Open the packs carefully, transfer the pork and rhubarb to plates and serve.