Beef

Marinate the beef in soy sauce and lemon for at least 1 hour
Heat the oil in a pan and pan-fry half the onions until soft then set aside
Drain the marinade from the beef and set the marinade aside
Pan-fry the beef 1 minute per side in the same pan and set aside
Add more oil if needed and sauté garlic with the remaining onions until softened
Pour the remaining marinade and water into the pan and bring to a boil
Add the beef, cover and simmer until tender, adding water as needed
Season with salt as needed and top with the pan-fried onions
Transfer to a serving plate and serve hot