Preparation Whisk together mustard, shallot, sugar, salt, pepper, and vinegar in a small bowl, then add oil in a slow stream, whisking until emulsified. Just before serving, toss salad ingredients with just enough vinaigrette to coat and season with salt and pepper. Cooks' notes:·If the mâche you buy has plugs attached, you'll need 3 ounces before trimming; if you're buying loose leaves, you'll need 1 1/2 ounces. ·Greens can be washed and dried 1 day ahead, then chilled in sealed plastic bags lined with dampened paper towels. ·Vinaigrette can be made 1 day ahead and chilled, covered.
Preparation Whisk together mustard, shallot, sugar, salt, pepper, and vinegar in a small bowl, then add oil in a slow stream, whisking until emulsified. Just before serving, toss salad ingredients with just enough vinaigrette to coat and season with salt and pepper. Cooks' notes:·If the mâche you buy has plugs attached, you'll need 3 ounces before trimming; if you're buying loose leaves, you'll need 1 1/2 ounces. ·Greens can be washed and dried 1 day ahead, then chilled in sealed plastic bags lined with dampened paper towels. ·Vinaigrette can be made 1 day ahead and chilled, covered.