1. Heat the stock in the top half of a double boiler, add the hot sauce, garlic powder, black pepper and stir in the spinach.
2. Keep stirring and add handsful of each cheese that was tossed with the cornstarch.
3. Stir slowly until each handful melts.
4. Stir in cream, heat gently.
5. Adjust seasoning for spiciness, adjust to taste.
6. Serve with bread cubes, pretzel rods, blanched veggies; whatever floats your boat.