1 ½ cups onion soup
prepared from a packet of dry onion soup mix
¼ cup bacon grease (see notes)
1 ½ pounds boneless beef round steak
cut into 1/3-inch cubes
1 ½ pounds beef sirloin steak
cut into 1/3-inch cubes
1 teaspoon salt
1 tablespoon chili powder
2 teaspoons ground cumin
½ teaspoon ground black pepper
3 (15 ounce) cans kidney beans
undrained
1 (6 ounce) can tomato paste
1 (8 ounce) can tomato sauce
2 teaspoons unsweetened cocoa powder
1 cup cola soft drink (such as Coke®)
1 tablespoon yellow sport pepper sauce (such as Texas Petes's®)