I've just started DS on 'solids' and have made up some ice cube trays of pureed food. Some of theses are just fruit/veg, but I've also frozen some puree mixed with baby rice. Anyway, what I'm confused about is thawing them out. I thought that I could just defrost them and then heat them to lukewarm and feed to DS, but the books say to defrost, heat to boiling and then let cool down - is this really necessary?