Ingredients

  • 2 garlic cloves
  • sea salt
  • 6 tablespoons unsalted butter, softened
  • 2 teaspoons Dijon mustard
  • 14 cup capers, drained and rinsed
  • 1 lemon, zest of, grated
  • 3 tablespoons fresh marjoram, chopped
  • black pepper
  • 1 lb Brussels sprout
  • 1 head white cauliflower, white (about 1/2 pound)
  • 1 head green cauliflower, Romanesco (green, about 1/2 pound)

Method

  • To make the mustard-caper butter, pound the garlic with a half-teaspoon salt in a mortar until smooth.
  • Stir the garlic into the butter with the mustard, capers, lemon zest and marjoram.
  • Season to taste with pepper.
  • (The butter can be made a day ahead and refrigerated.
  • Bring to room temperature before serving.
  • ).
  • Trim the base off the Brussels sprouts, then slice them in half or, if large, into quarters.
  • Cut the cauliflower into bite-sized pieces.
  • Bring a large pot of water to a boil and add salt.
  • Add the Brussels sprouts and cook for 3 minutes.
  • Then add the other vegetables and continue to cook until tender, about 5 minutes.
  • Drain, shake off any excess water, then toss with the mustard-caper butter.
  • Taste for salt, season with pepper and toss again.