Red Chile Tostadas with Eggs

Name: Red Chile Tostadas with Eggs
Cook time: 20 min
Total time: 20 min
Cuisine: American, Mexican, Latin American
Ingredients: 6 corn tortillas; 1/4 to 1/2 cup avocado oil or vegetable oil for frying; one 14-ounce can refried beans; 1 cup red enchilada sauce (I use a pouch of Frontera Red Chile Enchilada sauce – my all time fave); 1/2 cup shredded cheddar cheese; 6 eggs; 1 red onion; 2/3 cup white distilled vinegar; 1/2 teaspoon salt; 1/2 teaspoon sugar; 2 tablespoons cilantro; 1 avocado