01 -
Chop beef into strips about 4 inches long. Flatten further with a meat mallet, then coat with baking soda. Wait 15 minutes, then wash it off.
02 -
Combine the beef slices in a bowl with soy sauce, calamansi juice, and black pepper. Pop it in the fridge for 30 minutes to marinate.
03 -
Warm oil in a big skillet. Cook onions until soft but not browned, about 2 minutes. Set most aside, but leave a few in the pan.
04 -
Add garlic to the same skillet, stir for a minute, then throw in the beef slices in a single layer. Flip halfway, cooking for 10 minutes total.
05 -
Pour the leftover marinade and water or broth into the pan with the beef. Bring to a boil and simmer for 2 minutes. Add extra salt if you'd like.
06 -
Put beef on a serving dish, pour sauce on top, and add the onions you saved earlier. Serve warm alongside the steamed rice.