A practicing Jew (someone who observes the Jewish faith, rather than someone born to a Jewish mother) will only eat kosher food.
What is and isn't kosher also changes depending on the time of year (for example, wheat products such as bread and beer are not kosher during Passover).
Kosher rules can be very complex, and depending on their tradition someone may follow a few, some or all of them. Someone who wishes to eat kosher as part of their Jewish identity will likely not live as strictly as an orthodox Jew.
For example, someone may avoid eating pork and shellfish (both non-kosher foods) but will not worry about mixing meat and milk products in a single dish (which would rule out, for example, any Pizza with a meat topping).
Virtually all Orthodox Jews and many non-orthodox Jews today keep kosher.
Religiously observant Jews will only eat food that is kosher.
Kosher food is eaten whenever a Jew is hungry, because we don't like starving and we can't eat anything else.
People of the Jewish religion eat 'kosher" (meaning fit) food because that is the way they were commanded by God in the Tanach.
Because it is a requirement of living life as a Jew as set out in the Torah.
This is a Jewish phrase to insult another Jew that is Kosher, if you see Why is there a Jew on that couch? if you say couch while the u is silent it sounds like Koush which then falls on Kosher, Kosher means you can only eat certain kinds of meat and food and animals.
Kosher
if they are observant, only kosher.
Jews are only able to eat kosher food because it is against their religion to eat non kosher food.
Kashrut, the Jewish dietary laws, govern the preparation and consumption of food for Jew. There is no conflict between kashrut and preparing food for diabetics.
Almost all brownie recipes are kosher (chocolate, sugar, butter, flour, baking powder, nuts) so many less observant Jews will eat brownies without asking questions about the ingredients. More strictly observant Jews will happily make brownies or eat them if made by a Jew they trust, but the laws of kashrut (kosher cooking) require supervision of food preparation by a knowledgeable Jew in order for the result to be certifiably kosher.
Jews who eat non-kosher food are in violation of the laws of their religion.
Yes, tuna is a kosher fish. Canned tuna must be kosher certified though.