Remember when spinach salad meant warm bacon dressing and chopped hard-cooked eggs, and we all loved it and felt oh-so-sophisticated when we ordered it at a café? Did you know (I didn't) that spinach salad, an adaptation of a German dish of dandelion greens with a bacon-vinegar dressing, probably originated in Pennsylvania Dutch country, and not in the kitchen of a French chef? These days, when it comes to spinach salad, there are no rules, as this version with bell pepper, olives, feta cheese and pine nuts proves. There are a few secrets to making great salads that draw on ingredients in your pantry, and they all come down to this: be fearless! Combine unlikely ingredients, using whatever's in season. Take a sauce you'd made for pasta, or a chutney, and thin it with some water to make a salad dressing. Don't be afraid of color. If you don't have baby spinach for this salad, pluck a few lettuce leaves from your garden. And if you don't have good feta, try ricotta salata or another salty cheese.