In a medium bowl combine all of the spice ingredients. Add apple cider vinegar to form a paste. Mix in the ground pork until well combined.
Heat a larger skillet to medium-high heat. Add the chorizo and cook for 10 minutes or until cooked through.
Cook eggs in another large skillet over medium heat. Cook for 2-3 minutes per side. Sprinkle with salt and pepper before flipping.
Heat refried beans in a microwave safe bowl.
Top each tostada shell with a layer of refried beans, chorizo, 1 fried egg, sliced avocado, salsa, and Mexican crema. Drizzle with hot sauce if using.