Is there any Filipino fruit/veggie that a baby can't eat prior to turning 1?

Generally, anything that is citrus-y should be avoided. Citrus is very acidic and many babies under the age of 1 year suffer rashes and tummy upsets due to the acidity. I read that kalamansi (calamondin) is quite common in the Philippines and used in some dishes, to marinate meats, so best to avoid that.