1. Melt the butter in a large frying pan over medium heat. Add the pork mince and cook until browned, stirring frequently. Stir in the garlic, dried oregano, cinnamon, cloves and black pepper. Cook for 3-4 more minutes.
2. Add the sherry, sugar and salt to the turkey, stir well and cook for 3-4 minutes, until the flavors are blended. Remove from heat.
3. Put the eggs in a bowl. Beat lightly to mix, then stir in the finely diced tomatoes and chopped onion.
4. Return the chorizo mixture to the heat. Heat it through and pour in the egg mixture. Cook, stirring constantly, until the egg is almost firm.
5. Stir in the milk or cream and check the seasoning. Garnish with fresh oregano and serve with warm corn or flour tortillas.