On 18/05/2021 19:28, Nick Odell wrote:
On Tue, 18 May 2021 19:46:14 +0100, newshound
wrote:

On 18/05/2021 17:48, JohnP wrote:
I have a decent (Tefal) frying pan with a burned on deposit. Would one of
the aerosol oven cleaners get it off without damage?

Who knows. Caustic soda, the active ingredient of industrial strength
oven cleaners is not going to attack PTFE. But, if the "burning" is
enough to have damaged the integrity of the PTFE coating including its
adhesion to the pan (steel or aluminium?), then you might have a problem.

Just to take it further, cooking oils will often change their state at
a temperature well below the point of degradation of PTFE and then be
deposited on the surface of pan like a sort-of lacquer. I would say
that if the pan is truly burned then you are stuffed: if it's
lacquered it might not be knackered.

What I do is leave the pan in soak overnight then gently scrape away
the deposit with a fingernail. Moving the fingernail horizontally over
the surface there's nothing to dig in and scratch (I suspect my nails
are softer than Teflon anyway)and the raised portions of
water-softened resin will scape away little by little leaving an
undamaged surface behind. This is what I do with my nice non-stick
pans when I have to. My favourite is over six years old and still
looks good.

Nick

My non stick skillets are now cast iron Le Creuset's.
If something sticks I use stainless steel scourers

Now 6 years old they have saved me a fortue in non stick pans ...

--
In a Time of Universal Deceit, Telling the Truth Is a Revolutionary Act.

- George Orwell