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1 Shallot, finely chopped
1 Tbsp Lemon Juice
1 bunch Leeks, tough outer layer removed, white and pale green parts only
1 tsp Dijon Mustard
1 tsp Whole Grain Mustard
1/2 cup Chicken or Vegetable Broth
1/2 cup Dry White Wine
Freshly Grated Lemon Zest
Freshly Ground Black Pepper
Sea Salt
¼ cup + 1 Tbsp Olive Oil
¼ tsp Sugar
½ Garlic Clove, finely grated
Trim root end of leeks, leaving as intact as possible so they don’t break apart while cooking. Cut in half lengthwise. Don’t throw away tough outer leaves. Keep in freezer and use with other scraps to make stock.
Preheat oven to 325 degrees and adjust rack to middle position. Heat 1 tablespoon olive oil in large ovenproof skillet over medium-high heat until shimmering. Add leeks in single layer, cut side down. Cook, shaking occasionally, until slightly golden. Flip leeks so cut side is up and sprinkle with sea salt and pepper. Add wine and broth. Cover and bake 20 minutes. Remove cover and cook 10 minutes longer until leeks are completely tender and translucent and most of liquid has evaporated.
Meanwhile, whisk shallot, garlic, lemon juice, sugar, and mustards in small bowl. Gradually add ¼ cup oil and 1 tablespoon water, continuing to whisk. Season vinaigrette with sea salt and pepper.
Remove leeks from oven, drizzle with vinaigrette, sprinkle with lemon zest, and serve.
