Place the chopped beef sirloin in a bowl and mix with soy sauce, Worcestershire sauce, and cooking wine. Let this marinate for 30 minutes at room temperature (manatiling nakababad sa loob ng 30 minuto).
Heat 2 tablespoons of cooking oil in a wok or large pan over medium heat (katamtamang init, 350°F/175°C). Add minced garlic and cook until light golden brown. Add half of your minced onions and cook until they become soft and clear.
Add the marinated beef to the pan. Cook for about 20 minutes, stirring occasionally, until the meat becomes tender and dark brown. Test the meat's tenderness by trying a piece – it should be easy to chew but not overcooked. Add a pinch of salt to enhance the flavor.
Once the beef is tender, add the entire can of liver spread and mix well. Lower the heat to avoid burning. Squeeze in the juice of three calamansi (or one lemon) and cook for 5 more minutes, stirring gently.
Add Maggi Savor for extra flavor. Mix in the sliced green chilies (siling haba) and the remaining minced onions. Stir everything together.
Make a small well in the center of the beef mixture. Crack an egg into this space and let it cook for 30 seconds before mixing it thoroughly with the beef. This adds richness and helps bind everything together.
Turn off the heat and let the sisig rest for 2-3 minutes. This allows the flavors to settle and the egg to finish cooking from the residual heat.
Transfer your beef sisig to a serving plate or sizzling plate if you have one. Garnish with lemon or calamansi slices and chopped red chilies on top.
If you want a creamy version, add mayonnaise now while the dish is still warm but not hot – this prevents the mayonnaise from separating.
Serve immediately while hot, preferably with steamed rice. Place extra calamansi and chilies on the side so everyone can adjust the taste to their liking.
Remember: Keep your heat at medium throughout cooking (hindi masyadong mataas) to prevent the meat from becoming tough, and taste as you go to adjust the seasoning to your preference.