My BB starts to eat banana at the age of 7 months and he is now coming to 9 months' old this Thursday. As not frequently eat, I just buy the banana pureed instead of making by myself. I buy the Gerber brand banana pureed for my BB and he loves so much. Normally I'll give him half bottle for one day and the half for next day. Suggest to finish the whole bottle within 1-2 days provided that it's stored in the fridge after open.