How is glass made.
Kashering glazed ceramic.
The milk was still boiling when it was poured out which defending itself from making the pot milky.
Unglazed earthenware cannot be kashered at all as the porous ceramic permanently absorbs juices and flavors from foods.
However the following directions apply to kashering utensils year round as well.
From context this is a kli cheres.
Basically the raw ingredients are heated.
Glass can be made into delicate drinking glasses as well as tough heat resistant ceramic cook tops withstanding temperatures over 1000 f.
The article had cited shulchan aruch s position glass does not absorb to permit kashering glazed pots.
Sand soda and lime.
As with all areas of halachah those who are unsure of how to apply the rules of.
In this case however the ceramic may be kashered either by immersing it in boiling water or by soaking it in cold water for 72 hours and changing the water after 24 and then 48 hours ibid 61.
One of the many preparations one must make for pesach is kashering a process to prepare a non kosher vessel for kosher use or a chametz vessel for use on pesach.
Most people only kasher their utensils in preparation for pesach.
In the food industry glass applications are extremely diverse.
The taz in yd 93 1 brings the baal haitur that if i cooked milk in a ben yomo meat pot and there was 60x the meat taste i can cook whatever i want to afterwards milk or meat.