[Also worth noting: Pyrex cookware is nowhere near as tough as Pyrex labware. I've had a Pyrex pan shear in half when taking it out of the dishwasher. This is the exception, granted, but.]
Had that happen. Clear, flat-bottomed cup. First sound was a rather musical "ping", rather than "crack". All heads in the office turn towards that unique sound, trying to figure out what happened. We didn't know until I picked up the cup, leaving the bottom behind (cracked around seam at bottom of cup).
Ah yes. I have a habit of doing my brew in a pyrex 4 cup measuring cup, which I started doing as a way to add a measure of control to my process, but later realized was a better place for near-boiling water than the tupperware pitcher I was about to pour it into.
If you want to find one that actually is>,em>, it turns out that googling and/or searching ebay for "borosilicate" works quite well. (Says the happy owner of ten ~500 ml borosilicate coffee mugs.)
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Is it Pyrex now?? [ducking and running...]
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[Also worth noting: Pyrex cookware is nowhere near as tough as Pyrex labware. I've had a Pyrex pan shear in half when taking it out of the dishwasher. This is the exception, granted, but.]
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That cup was Pyrex (but not labware grade).
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Cooking with labware
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