Chayotes Maria

1. 6 medium chayotes, washed
2. 1/3 cup flour
3. 3 cups skim milk
4. 1 cup evaporates skim milk
5. 1/2 cup low fat sour cream
6. 11/2 tablespoons chopped fresh parsley
7. 3 scallions, minced
8. pepper to taste
9. small amount of salt (optional)

In a large saucepan, bring 4 quarts of salted water to a boil. Add the chayotes, cover, and cook until they are tender when pierced with a skewer, about 30 minutes. While the chayotes are cooking, prepare the sauce. In a small bowl, whisk together the flour and 1/2-cup of skim milk until smooth. In a large non-aluminum saucepan, stir together the remaining skim milk and the evaporated skim milk. Bring to a simmer over medium heat. Very gradually whisk in the flour mixture. Stir until the sauce boils and thickens. Reduce the heat to very low and cook for 2 minutes, stirring occasionally. Stir in the sour cream, parsley, and scallions and season to taste with salt (optional) and plenty of pepper. Drain the cayotes and cut into 1/4-inch thick slices. Put the sliced chayotes in a serving bowl, pour the sauce over, and serve immediately. Serve with roast pork loin, carrots, and potatoes.