Here again the INFO:
Blue or colorful discoloration on stainless steel cooking pots arise during or after cooking and rinsing. Stainless steel (18/10 steel) tends to form a protective layer in front of feed ingredients (salt, lime, etc.) and detergents. Discolorations occur when connecting magnesium and silicate ions with oxygen. Everything is included in food and tap water.
Under certain conditions, this layer can be visible. The discoloration themselves are neither harmful, nor affect the quality, durability or usability of the cooking utensil. With standard metal cleaning agents or vinegar or lemon solution (or cook sauerkraut) can remove the discoloration.
Please note that metal handles at very long cooking times - can heat up despite Cool + - due to physical conditions such as heat emitted from surrounding hobs or in direct contact with an open flame (gas hob).
Conclusion on the critics of the pots:
Where omelette without breaking eggs!
Before one does not understand something always good, the manual (also advance Esen cost at [...] - there is everything to take care of when the handles can get hot and more I'm also always good advance smart before I do something. buy and I also know that I never get 100% and anything is always a disadvantage I must decide for myself whether I can live with it would be too great if you always get products that always satisfy a -.. something is always stupid in the matter; o)