It may come as a surprise, but the answer is the infant. Feeding infants and toddlers is very different than feeding adults. They need more iron, calcium and zinc than at any other time.
Variety is especially important and including fortified foods helps meet their higher needs.
Allowing toddlers to participate in their feeding helps them learn to recognize when they are full, helps develop hand eye coordination, and allows them to develop their own food preferences. Parents can ensure adequate nutrition by offering a wide variety of high nutritional value foods in portions infants and toddlers are comfortable with.