What is the main advantage to introducing one new food at a time to an infant?

The main advantage of introducing one new food at a time to an infant is to monitor for potential allergic reactions or sensitivities. This approach allows caregivers to identify which specific food may cause an adverse reaction if one occurs. Additionally, it helps the infant get accustomed to different tastes and textures gradually, promoting a more positive eating experience. Finally, it aids in keeping a clear record of what has been introduced, making it easier to track the infant's dietary progress.