Jacques Pépin shares the famous onion sandwich recipe he picked up from his dear friend James Beard decades ago. This was a favorite of Jacques' wife, Gloria. Not an onion fan? That's okay. Try Jacques' radish sandwich recipe for a crunchy lunchtime delight.

What you'll need: Bread, mayonnaise, 1/2 white onion, salt, parsley or chives, unsalted butter, thinly sliced radishes