With gloved hands I pull the chicken casserole from the oven. To my own amazement, I didn’t burn it. Relief fills me. I have only 15 minutes before our guests arrive, so I take a special packet of seasoning and carefully sprinkle a fine layer over the casserole. Then I step back to admire my handiwork. For the first time in my life, I’ve actually cooked something edible. My husband rounds the corner and gasps, “Why did you cover it with that seasoning? You’ve ruined it!” “What are you talking about? It’s perfect!” “Denise, the family had one request: No MSG. And that