3 dijon mustard from sara moulton Recipes

mustard powder (hot ), water, very cold, cider vinegar, dry white wine, onion, minced yellow, shallot, minced, garlic, minced, bay leaf, whole black peppercorns, juniper berries, whole, fresh lemon juice, very cold, kosher salt, sugar

fresh tuna , swordfish or salmon fillet, 1-inch thick, cut into 4 pieces, mustard dressing , recipe follows, star fruit , cut crosswise into 1/4-inch thick slices, torn mixed lettuce, cucumber, peeled , halved lengthwise and thinly sliced, green onions, sliced, mayonnaise, lime or lemon juice, dijon mustard, chopped fresh dill, paprika