Cut the tofu into small cubes with a sharp knife.
Heat the vegetable oil in a preheated wok or large saucepan, add the tofu and fry quickly until lightly browned. Lift out with a spatula and drain on paper towels.
Add the carrot, ginger root, and scallions to the wok or possibly pot and stir-fry over high heat for 2 minutes.
Add the vegetable soup, soy sauce, sherry and sugar. Stir all ingredients well. Bring to a boil and gently bubble for 1 minute.
Add the romaine lettuce to the pot or wok form and stir until combined.
Repeatedly add the tofu to the pot or possibly wok form and stir-fry briefly. Season strongly with salt and freshly ground pepper and bring to the table hot in heated soup bowls.
Use a sharp knife to make small indentations in the carrot lengthwise before cutting it into slices. This will give you a decorative flower-like effect. You can also cut the carrots crosswise into a little bit longer slices.