Just beginning to wean, and having much fun making multi-coloured ice cubes. Trouble is, when I defrost potato it doesn't go back to being potato puree, but lumps of potato in water. My DD is soldiering on and eating it, but it looks pretty grim and the texture's all wrong. I've been blending potato and a small amount of water, and freezing from room temperate, and then defrosting again at room temperature. Am I missing something?