I bought this stove last year and it's impossible to keep it clean and the "residue" will not come off. I've used every cleaner AND bought the pots and pans it recommends, it didn't matter. Also, I tried to can green beans from the garden and the temp won't go high enough to seal hold 10 psi, it was steady at 9. Now I have to figure out what to do with the green beans before they spoil! Very disappointed in this very expensive purchase. Not worth the money.