Look under page 8 of one of the manuals, the one that doesn't have colored pages. They will tell u what you cannot do with the steamer.
Yes it's good n convenient if u r doing batches of frozen purees during weaning. But some babies progress to chunky food v fast hence only need to mash food and feed instead of feeding purees. So it pretty much depends if u wanna get one. The capacity also quite little.. Maybe max 12oz or so per time.