pinch the pork with a knife.

marinate the pork, soy sauce and citrus for 30 minutes.

fry the pork in the cooking oil until half cooked. use very low heat.

remove the excess oil used in the frying and add the pork and the marinate to the pan.

let it boil for 10 minutes.

add the pepper, sugar and onion.

turn off the fire and cover it for 5 minutes.