Lee Love on tue 29 jul 08
On Tue, Jul 29, 2008 at 12:44 PM, Bill Merrill wrote:
> All casseroles made by potters will work the best ( and last the
> longest) if the casserole in put into a cold oven and then raise the
> temperature. The casserole and ingredients should be at room
> temperature.
Bill,
In Japan, they had a string of injuries from this type of glass
ware (something like Corel) in elementry schools because when they
break, they shatter explosively. Several eye injuries were reported.
It was replace with safer ceramic ware.
--
Lee Love in Minneapolis
http://mashikopots.blogspot.com/
http://claycraft.blogspot.com/
"Let the beauty we love be what we do.
There are hundreds of ways to kneel and kiss the ground." --Rumi
Bill Merrill on tue 29 jul 08
Pyrex and Corning ware are formulated so all the silica is completely
fused at temperatures we can't achieve. In fact those are made of glass
and not clay. They have no expansion or contraction caused by heat or
coldness. It was interesting for me to see at the Corning museum, that
the original ovenproof ware was clear and amber in color like glass.
There was an opacifier added to the mix to give the whiteness we all
know.
All casseroles made by potters will work the best ( and last the
longest) if the casserole in put into a cold oven and then raise the
temperature. The casserole and ingredients should be at room
temperature.=20
Bill
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Nancy Guido
Sent: Monday, July 28, 2008 5:26 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Re: oven safe?
I can't be the only one to prepare two lasagnas (or baked ziti) and
freeze one and cook it later? Cook books tell you all the time to
prepare up to step (whatever) and freeze for later - add a little extra
time for cooking. I never used a ceramic dish, I have a couple of
pyrex ones. I've been cooking for over 30 years. I haven't always had a
microwave or the brain to put it in the microwave to partially cook it
first before I put it in the oven. Usually, I threw it in the oven
right out of the freezer. To thaw it first would be bad I think.
If you say oven safe - that's what folks will remember. Best to make
sure.
nancy g.
Anita Rickenberg on tue 29 jul 08
"original ovenproof ware was clear and amber in color like glass. There =
was
an opacifier added to the mix to give the whiteness we all know."
I worked for several years at a Corning dinnerware finishing plant that =
made
Centura (retail) and Pyroceram (commercial) tableware. The blanks =
resembled
glass and were a greenish clear color. After going through the gas =
ceraming
train kiln, they became the white color we're familiar with. To achieve =
the
standard of "whiteness" that Corning advertised, the time and =
temperature in
the kiln was critical. Many years after the fact, I can still recall the
night that a lightning storm went through and knocked out the burners =
three
times during my 8 hr. shift (when the electric went out, the burners =
shut
off). An entire kiln load of ware was scrapped.
Anita
Bill Merrill on wed 30 jul 08
Lee,
In the 70's flame ware was the in clay to use to make casseroles and
teapots. The flame ware was like putty to throw and few glazes worked
on the clay body. The clay was a beautiful orange color from the
spodumene in the body. The spodumene today is not the same. I did
tests making small pots with a handle on the side so it could pour. I
boiled water in them, plunged them in cold water etc. I never had one
break, but I never sold any of them. Ron Probst had articles on flame
ware in Studio Potter at least 30 years ago. Wally Schwab, from
Portland, Oregon made teapots and covered baking dishes with flame ware.
He eventually quit making them because too many of them were breaking
and he always replaced them. He quit making tea pots when one of them
boiled dry and exploded all over the kitchen. That was the last batch
of pots he made using flame ware.=20
Bill
=20
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Lee Love
Sent: Tuesday, July 29, 2008 5:43 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Re: oven safe casseroles
On Tue, Jul 29, 2008 at 12:44 PM, Bill Merrill
wrote:
> All casseroles made by potters will work the best ( and last the
> longest) if the casserole in put into a cold oven and then raise the
> temperature. The casserole and ingredients should be at room
> temperature.
Bill,
In Japan, they had a string of injuries from this type of glass
ware (something like Corel) in elementry schools because when they
break, they shatter explosively. Several eye injuries were reported.
It was replace with safer ceramic ware.
--
Lee Love in Minneapolis
http://mashikopots.blogspot.com/
http://claycraft.blogspot.com/
"Let the beauty we love be what we do.
There are hundreds of ways to kneel and kiss the ground." --Rumi
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