Combine water and beef ribs in a pressure cooker. Pressure cook for 25 to 30 minutes. Note: you can transfer this later to a larger cooking pot once the beef gets tender, if needed.
Add onion and tomato. Cook for 3 minutes.
Add Knorr Sinigang sa Sampaloc Mix. Stir.
Put the daikon radish (labanos) into the pot, Cover and cook for 5 minutes.
Add long green pepper, okra, snake beans, eggplant, and the kangkong stalks. Cover and cook for 5 minutes.
Season with patis and ground black pepper.
Add kangkong leaves. Cover the pot and turn the stovetop off. Let t stay for 5 minutes.
Transfer to a serving bowl. Serve.
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