FOOD FACTS Hot dishes from corned beef delicious and easy-to-make NOT every housewife realizes that wonderfully tasty, hot dishes can be made quickly with corned beef. Next time, instead of having it cold, try one of these ways of serving it. The recipes — kitchen-tested, and enough for four — are useful, too, when you want a hot meal in a hurry. CORNED BEEF HOT-POT 1/2 level teaspoon meat or vegetable extract; 1/2 pint water; 1 level dessertspoon flour; 8 oz. cooked root vegetables, cubed; 1 level tablespoon chopped onion; 1-1 1/2 level teaspoons salt; pinch of pepper; 4 oz.