I've just started to prepare myself for weaning and am in the process of making purees to store for the next few weeks. Trouble is - I've just made up a big batch of rice with banana and without thinking mixed it with some previously frozen breast milk. It's just a couple of ounces, but now I'm worried about putting the purees back in the freezer - does anyone know if this is a cause for concern. You'd think I'd know these things by now as this is for DD2!