In a bowl, combine the beef chunks, soy sauce, and calamansi juice. Mix well and let it marinate for at least 30 minutes to 1 hour.
In a large pot over medium-high heat, add the marinated beef chunks and sear them until browned on all sides. Remove the beef from the pot and set aside.
Add the chopped tomatoes and tomato paste to the pot. Cook until the tomatoes are softened and well-incorporated with the paste.
Return the browned beef to the pot. Add the bay leaf, beef broth (or water), and bring the mixture to a boil. Reduce the heat to low, cover, and let it simmer for about 1 to 1.5 hours or until the beef is tender.
Once the beef is tender, add the cubed potatoes, carrots, red bell pepper, and green bell pepper to the pot. Continue to simmer until the vegetables are cooked through, about 15-20 minutes.
Season with salt and pepper to taste. Remove the bay leaf before serving.
Serve hot with steamed white rice. Enjoy!
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Notes
Feel free to adjust the seasoning and ingredients to your preference. Some variations of Beef Mechado also include adding liver spread or cheese for extra richness. Enjoy your cooking!