1. Fry up your corn tortilla nice and crispy, fry your egg over easy, brown the ham, heat the beans, and start layering: tostada on bottom, slather with black beans, top with egg (you can do this a couple of times if you want; stack the plate up with tortillas, beans, and eggs as high as you like). Then garnish the top with salsa verde, shredded cheese, and diced ham, in that order.