Miele KM 6350 Operating And Installation Instructions page 49

Do not use washing-up liquid to clean the appliance. Using
washing-up liquid will not remove all soiling and an invisible
film will be left behind which will result in a permanent
discolouration of the ceramic surface.
Clean the cooktop regularly with a special ceramic
cleaning agent.
Wipe all coarse soiling off using a damp cloth. Stubborn
soiling may need to be removed with a shielded scraper
blade.
Then clean the cooktop with the Original Miele ceramic and
stainless steel cooktop cleaner (see "Optional accessories"),
applied with kitchen paper or a clean cloth. Do not apply
cleaner whilst the cooktop is still hot, as this could result in
marking. Please follow the manufacturer's instructions.
Finally, wipe the cooktop with a damp cloth, then polish with a
soft, dry cloth. Ensure that all cleaner residues are removed.
Residues can burn onto the appliance the next time it is used,
and cause damage to the ceramic surface.
Spots caused by limescale, water and aluminium residues
(spots with a metallic appearance) can be removed using the
Original Miele ceramic and stainless steel cooktop cleaner.
Should any sugar, plastic or aluminium foil spill or fall onto
a hot cooking zone while it is in use, first switch off the
appliance. Then carefully scrape off all the sugar, plastic or
aluminium residues from the cooking zone whilst it is still
hot, using a shielded scraper blade. Take care not to burn
yourself.
Allow the appliance to cool down, and then clean as
described above.
Cleaning and care
49