Heat oil in a wok, and stir-fry the onions, garlic, ginger and capsicum in it over high heat till onions and capsicums look wet.
Add the soy sauce, salt, vinegar, and the tofu.
Mix well, and serve garnished with some greens.
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Key Ingredients: tofu, vegetable oil, garlic, ginger, onion, capsicum, soya sauce, Salt, vinegar