Pour water into a cooking pot. Add tomato, onion, and corned beef. Let boil. Cover and cook between low to medium heat for 1 1/2 to 2 hours or until the beef becomes tender. Note: add more water as needed.
Add Knorr Sinigang sa Sampaloc Mix. Stir.
Add daikon radish, okra, eggplant, long green pepper, and snake beans.Cover and cook for 5 minutes.
Season with fish sauce and ground black pepper.
Add Spinach. Turn off heat.
Transfer to a serving bowl. Serve.
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