Final answer:
Generally, patties should be flipped one to three times during cooking. This ensures even cooking while retaining juices for flavorful burgers. Flipping technique is also important for best results.
Step-by-step explanation:
When cooking patties, it is typically recommended to flip them one to three times during the entire cooking process to ensure they are cooked evenly. Flipping them too frequently can prevent the patties from developing a good sear and can lead to a loss of juices, resulting in dryer, less flavorful burgers. Conversely, not flipping them enough can cause burning or uneven cooking. It is important to use a spatula to flip the patties gently to retain as much of the juices as possible.