Remove the juice from Calamansi, pour it in a large pan where you will place your marinade

Add the Worcestershire sauce

Add the Soy sauce

Add the Garlic

Add freshly ground black pepper

Mix the marinade and add the Pork slices then refrigerate for at least 2 hours.

Heat the frying pan and pour the Canola Cooking oil.

Saute the onions, once cooked remove from the frying pan and set aside.

On the same frying pan, add canola oil.

Pan-fry both sides of the pork slices for 2 to 3 minutes or until medium brown.

Remove the cooked pork slices and pan-fry the remaining slices.

Pour the soy sauce and calamansi juice marinade into another sauce pan.

Add water.

Add the sauteed onions to the Bistek mixture.

Let it boil.

When it starts boiling, add to the mixture the fried pork slices then mix well.

Simmer for 20 minutes or until the pork becomes tender(add more water if needed).

When the pork is already tender add the bell red pepper and the remaning onions rings.

Cook for 5 more minutes, you can add salt to adjust the taste. You should have some sauce in it when its done.

Garnish with the onion rings.

Transfer to a serving plate and serve with steamed rice.