I don't buy jar foods. I make my own when I need to make it. Usually when my babies are sitting up themselves I put them in the highchair and let them experiment with cheerios, green peas, green beans and banana. I've never had a problem with food allergies, so I don't wait in between. But, I have done my homemade apple sauce and peaches and pears before, and freeze them. I've heard people freezing them in ice cube trays. I frooze mine in just little containers. Once my babies are older and want to try more foods, I just grind up the food we are having or smash it small with a fork, and offer it that way. That way they learn to like our food with all the spices and seasonings. It's better that way. My SIL had one of those food grinder things, and would put a little of everything in it (that was for that meal) and smash it together. Her children loved it!! She would take it anyway, and I have even seen her grind up some taco from Taco Bell. LOL!!