I'm in the process of searching for a new kettle and began looking into induction. What I have discovered in both the brewing and culinary market is that there is no surprise that induction hasn't really taken off since the proper pots are rarely available. The best I have found are pots with a cladded bottom containing an inner layer of 400 grade stainless (ferritic steel). This is probably more efficient than a propane burner but doesn't contribute to a larger surface area which is the whole advantage to induction. I want a vessel with 400 cladding throughout, but best I can tell, this doesn't exist. Does anyone know why?