Electrolux 75852 G Instruction Booklet page 9

As soon as a liquid starts boiling, turn down the flame so that it will
barely keep the liquid simmering.
Use only pans or pots with flat bottom.
If you use a saucepan which is smaller than the recommended size, the
flame will spread beyond the bottom of the vessel, causing the handle to
overheat.
Carefully supervise cooking with fat or oil, since these types of foodstuff
can result in a fire, if over-heated.
The stainless steel can become tarnished if excessively heated. Therefore
prolonged cooking with potstones, earthenware pans or cast-iron plates
is inadvisable. Also, do not use aluminium foil to protect the top during
use.
Make sure pots do not protrude over the edges of the cooktop and that
they are centrally positioned on the rings in order to obtain lower gas
consumption.
Do not place unstable or deformed pots on the rings: they could tip over
or spill their contents, causing accidents.
Pots must not enter the control zone.
It is advisable to use cast iron recipients or steak plates only on the rear
burners, so as not to damage the electronic lighting components.
Using the Wok Stand
A wok stand is provided to enable you to use a
round bottomed wok on the hob. The wok stand
must only be used on the triple crown burner,
and should not be used with any other type of
wok or pan. When fitting the wok stand, ensure
the recesses in the frame fit securely onto the
bars of the pan supports, as shown in the picture.
9