Tortitas de camarón

350 g dried shrimp, as many nopales as you like. I added three 400-gram bags of nopales, 6 large potatoes, 1 large onion, 12 guajillo and 1 ancho chiles, 4 garlic cloves, 1/2 tablespoon ground cumin; if you use whole cumin, it's a pinch. 4 black peppercorns, 1/2 bunch cilantro, 4 homemade toasts, 9 eggs, salt, and oil as needed.