Book excerpt: Microwave cooking is becoming a way of life for millions of people. But as many microwave users find that meals can be cooked in minutes, they often lose the desire to experiment with unusual dishes. However, convenience cooking needn't be time-consuming and dull, according to this cookbook. Margie Brignac, a microwave specialist and demonstrator, has adapted her favorite Louisiana recipes to microwave cooking, combining timesaving convenience with the flavors of Cajun and Creole cooking. That is only one of more than 200 recipes for everything from soup to dessert featured in Southern Spice a la Microwave. Try one yourself and discover that you don't have to use an old iron pot to get delicious results.