Miele KM 6357 Operating And Installation Instructions page 51

Do not use washing-up liquid to clean the ceramic surface.
Washing-up liquid will not remove all soiling and deposits.
It will form an invisible coating which will cause permanent
discolouration of the ceramic surface.
Clean the cooktop regularly with a suitable ceramic
cooktop cleaning agent.
Wipe off all coarse soiling 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 appliance is still hot, as this could result in
marking. Please follow the manufacturer's instructions.
Finally wipe the cooktop with a damp cloth, then dry with a
soft, dry cloth. Residues can burn onto the appliance the next
time it is used, and cause damage to the ceramic surface.
Ensure that all cleaning agent residues are removed.
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.
Danger of burning.
Protect your hands with oven gloves before using a
shielded scraper blade to remove sugar, plastic or
aluminium residues from the hot cooktop.
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 cooktop immediately whilst they
are still hot, using a shielded scraper blade.
Allow the appliance to cool down and then clean as
described above.
Cleaning and care
51