Soufflé de queso

Assemble these supplies:

• 6 tablespoons butter 
• 8 tablespoons flour
• 1/2 teaspoon salt 
• 2 cups milk 
• 1 cup cheese, grated 
• 4 eggs, separated

Steps in preparation:

1. Melt butter in a frying pan over low heat; blend in flour and salt. Remove from heat and gradually stir in the milk. Return to heat and stir continually until thick and smooth—about 5 minutes. Add cheese and remove from the heat to blend.
2. Add a little of the sauce to the slightly beaten egg yolks; then stir them into the cheese sauce. Beat the egg whites until they are stiff but fluffy. Fold the whites carefully into the cheese mixture.
3. Pour into a 1 1/2 quart capacity greased casserole. Bake at 325° for 20 minutes; then at 425° for about 15 minutes or until souffle is raised and golden brown on top. Serve immediately or it will drop.
4. SERVES 6.