Ingredients
8 2- to 2 1/2-inch-diameter red or yellow beets, 4 of each color if available
4 tablespoons extra-virgin olive oil, divided
Coarse kosher salt
3 cups water
1/2 cup sugar
1 pound trimmed rhubarb stalks, cut diagonally into 1/2-inch-thick slices
3 large oranges
2 tablespoons unseasoned rice vinegar
1 tablespoon fresh lemon juice
1 tablespoon minced shallot
1 teaspoon honey
3 cups watercress sprigs
1 1/4 cups coarsely crumbled feta cheese (about one 7-ounce package)
Fresh chervil leaves (optional)