Ingredients
Coarse salt
8 ounces whole-wheat linguine
1 1/2 teaspoons grated orange zest
3/4 cup fresh orange juice (from 2 to 3 oranges)
3 tablespoons olive oil
2 tablespoons balsamic vinegar
2 tablespoons Dijon mustard
1 teaspoon red-pepper flakes, plus more for garnish
1 large bunch watercress (about 3 cups), tough ends trimmed, washed and well-dried
2 cans tuna (6 ounces each), packed in oil and drained
Preparation
In a large pot of boiling salted water, cook pasta according to package instructions; drain.
Meanwhile, in a large bowl, whisk together orange zest, juice, oil, vinegar, mustard, and red-pepper flakes; season with salt. Add watercress and pasta, toss to combine. Scatter tuna over the top and sprinkle with red-pepper flakes if desired; serve.
