Poached Salmon Nicoise

2 bay leaves
2 cups white wine
10 black peppercorns
Salt
2 skin-on wild salmon fillet pieces (1 to 1 1/2 in. thick)
3 garlic cloves, crushed
1 tablespoon whole-grain mustard
5 tablespoons white wine
2/3 cup extra-virgin olive oil
2 tablespoons chopped flat-leaf parsley
2 tablespoons chopped basil
Sea salt to taste
2 large bunches watercress, root ends trimmed, leaving stems intact
10 small yellow-skinned new potatoes, boiled until tender and cut in half
4 hard-cooked eggs, cut into quarters
1/4 pound haricots verts (French green beans) trimmed and boiled until tender-crisp
1/2 cup pitted Niçoise olives
3 tomatoes, cut into lengthwise wedges

To a large saute pan, add bay leaves, salt, peppercorns, and wine. Add salmon and enough water to cover.
Remove salmon and set aside; bring liquid to a boil, covered. Reduce to a simmer, then gently slide salmon into liquid and simmer 10 to 15 minutes, covered, until salmon is just opaque.
While salmon is cooking, make the dressing. In a small bowl, whisk together garlic, mustard, and vinegar. Gradually whisk in oil until dressing is emulsified. Whisk in herbs and season with sea salt.
Using 2 spatulas, remove salmon, place on a cooling rack and chill for 10 minutes, loosely covered with foil. Discard poaching liquid.
Remove salmon from fridge and break into large pieces, discarding skin. On a plates, top watercress with pieces of fish, potatoes, eggs, green beans, olives, and tomatoes. Drizzle dressing over everything and serve immediately, accompanied by crusty bread.