Bistek is the Filipino beef steak dish. It’s usually a lean cut of beef, marinated in Calamansi (a tropical citrus fruit) juice and soy sauce, pan fried and the marinade added at the end.
This Pinoy beef steak dish is made with onions cut into rings. The sauce is a little oily and tangy. I substitute lemon juice since calamansi juice is not readily available here. I also use olive oil which is healthier instead of the regular cooking oil because the oil is actually going to be a part of the sauce.