How can I unjam my flan cases?

[flake99please]

Tah dahhh..

I (and Im assuming most folks who have replied on this thread) could have given you a perfectly adequate recipe for a french apple flan, if that is all you were after.

 

[PeteXXX]

Next thread: How can I unjam a quiche from a flan case?

Only joking.. I lined the base with a grease proof disc

 

[Markymark]

You deserve to have both flan dishes smashed and never allowed them again for putting tomatoes in a quiche.

 

[midlife]

Is there any bacon in that flan?

 

[TheDoctor]

Tomato and mushroom in a quiche?

 

[threebikesmcginty]

View attachment 365164

Tah dahhh..

Looks great, balls to the naysayers, and as I won with my suggestion you should pop half a flan in a jiffy bag and post it on down.

 

[PeteXXX]

Is there any bacon in that flan?

Nope

 

[PeteXXX]

[pedant_mode]Technically, the tomato and mushrooms are on the quiche, not in it.[/pedant_mode]

Just saying

 

[midlife]

No bacon, then isn't it just scrambled egg....

 

[mybike]

You deserve to have both flan dishes smashed and never allowed them again for putting tomatoes in a quiche.

Yeah, should have been pineapple.

 

[Tim Hall]

OK, purely for my own benefit. I had to figure this out.

The coefficient of linear thermal expansion of ceramics is very low. it is about 4 thousands of a millimeter per degree centigrade.
Assuming we can heat the bigger dish to 90 degrees C and cool the smaller one to 10 degrees using hot and cold water then.
Assuming ambient temperature of 20 degrees C then the big one will increase in temperature by 70 degrees and the small one decrease in temperature by 10 degrees.
The big one (200mm diameter) will grow to 200 plus 70 x 4 x 10^-3 = 200.28mm
The small one (190mm diameter) with shrink to 0.19 minus 10 x 4 x 10^-3m. = 189.96mm

The difference due to shrinkage/expansion is .32mm.

However, if the water method is used, it will have to be done upside down since the inner case will just sink down deeper.

I'm googling "upside down filling of a flat pan with water" as we speak.

No results so far.

Surely the coefficient of linear expansion is dimensionless, other than the unit of measurement of temperature. Thus the CLE of ceramics is 4x10^-6/K (or degree C), not 4 thousandths of a millimetre per degree C. The length of a lump of ceramic will increase by 4x10^-6 of its original length for each degree rise.
Change in length = Length x coefficient x change in temp
For 200mm case with 70K increase in temperature and a coefficient of linear expansion of 4 x 10^-6 change in length =
200 x 4x10^-6x70 = 0.056mm
A bigger piece of ceramic will have a correspondingly bigger increase in length for the same temperature rise (a 400mm dish will expand by 0.112mm for a 70K rise)

 

[Shut Up Legs]

Put them out in the sunshine.Oh hang on a min it's England it might take some time.

Sounds like an excuse to head for the Continent and do some cycling in the Alps. What? No bicycle ready for that? Oh well, you'll just have to buy another.

 

[jefmcg]

You deserve to have both flan dishes smashed and never allowed them again for putting tomatoes in a quiche.

It's a quiche provencale.

What the mushrooms are doing in a quiche provencale, I don't dare guess.

 

[PeteXXX]

Surely the coefficient of linear expansion is dimensionless, other than the unit of measurement of temperature. Thus the CLE of ceramics is 4x10^-6/K (or degree C), not 4 thousandths of a millimetre per degree C. The length of a lump of ceramic will increase by 4x10^-6 of its original length for each degree rise.
Change in length = Length x coefficient x change in temp
For 200mm case with 70K increase in temperature and a coefficient of linear expansion of 4 x 10^-6 change in length =
200 x 4x10^-6x70 = 0.056mm
A bigger piece of ceramic will have a correspondingly bigger increase in length for the same temperature rise (a 400mm dish will expand by 0.112mm for a 70K rise)

What he said..

 

[Paulus]

Real men do NOT eat quiche!

It's not Quiche, it is egg and bacon flan.