The best thing to do with any fresh vegetable is almost nothing. But I confess that I have become dangerously enamored of this Fresh Spinach Salade Lyonnaise. If you want to go vegetarian or vegan, just leave out the bacon and egg, adding another few tablespoons of olive oil to the dressing. Keep this salad in mind when fall greens like frisee, escarole, and radicchio roll around because the hot dressing will soften and sweeten those sturdy leaves. Serves 4 as a side dish, or 2 as a main course.