Peel and mince the ginger and garlic. Core the tomatoes and chop them fine or purée them in a food processor. Separate the cauliflower into florets.
Heat the oil over medium heat in a medium-size saucepan until very hot. Add the ginger and garlic and sauté for a few seconds, until you get a whiff of their aroma. Stir in the cauliflower, tomatoes, lime juice, an