In large bowl combine Manchego, Panela and Anejo cheeses. Set aside. Working on a towel-lined counter, spread open 1 chile at a time. Mold 1/2 cup of the cheese mixture in your hands to form a compact torpedo-shaped log and place inside the chile. Roll the flesh to entirely enclose the cheese, using the towel to help shape a tight roll. Place on a platter and stuff the remaining chiles. (They can now be reserved for up to 2 days, well covered, in the refrigerator.) Preheat the oven to 350 degrees. Spread flour on a platter. Beat the eggs with the salt and pepper in a bowl wide enough for dipping. In a 9-inch cast-iron skillet heat oil over a medium-high heat. Dip 3 chiles at a time in the flour, patting off the excess so just a fine even coating remains. Then dip chiles into the eggs. Test the oil by dropping a bit of egg. If it sizzles immediately and rises to the surface, the oil is ready. Dip the chiles, 1 at a time, into the oil, putting an extra dollop of egg batter on each. Fry 3 at a time until golden brown all over, about 1 1/2 minutes per side. Drain on paper towels. Reheat oil and repeat with remaining chiles. Transfer chiles to a baking dishes or tray and bake until the cheese thoroughly melts and heats through, 8 to 10 minutes. To serve, coat with Tomatillo salsa (other salsas can also be used). Top with a dollop of Crema.
In blender place tomatillos, jalapenos and water. Puree until just chunky. Add remaining ingredients and puree about 2 minutes more, or until no large chunks remain. This salsa keeps in the refrigerator, in a covered container, about 3 days.
In large bowl whisk together cream and buttermilk. Cover and set in a warm place (a gas oven with just the heat from the pilot light for example) for 8 hours. Place in refrigerator. Can be kept for up to a week.
c.1997, M.S. Milliken & S. Feniger, all rights reserved