Heat the olive oil in a wok or frying pan over medium/high heat. Add the garlic and stir fry for 1 minute. Then add the meat marinade mixture and stir fry for 1 minute. Add the onions and stir fry for a further 2 minutes. Add the tomatoes and green chili and stir fry for a further minute. Add remaining 1 tbsp of soy sauce, pisco, if using, and the vinegar. If using the French fries, Peruvians add the cooked fries to the stir fry mixture at this stage. Feel free to add them now or as a side in the step below. Carefully stir in and then turn off the heat.