Your baby cannot digest cereal efficiently:Let’s get this straight— in order to digest a grain like corn our body needs an enzyme named amylase which is responsible for splitting starch.But guess what! Your little one is incapable of producing amylase in large quantities as it takes about 1-2 years for it to come into play. There might be some salivary amylase production during the first 6 months, but pancreatic amylase, which is required for digesting a grain, is not produced until molar teeth appear.