Do ultra-orthodox Jews drink coffee?

Actually some Hasidic Ultra-Orthodox Jews consider drinking coffee to be somewhat of a religious devotion. read more

Actually some Hasidic Ultra-Orthodox Jews consider drinking coffee to be somewhat of a religious devotion. The laxative effect of coffee is considered healthy, and to have religious significance because one may not pray if one has need to relieve oneself, to the point where many Hasidic Jews understand that if someone is constipated before prayer they cannot pray. read more

Yes, the coffee from Starbucks is kosher and most Orthodox Jews have no issue going there for a coffee. They just won't eat the food there unless the shop in question is certified kosher. The rest of your question is meaningless to Jews and Judaism. read more

In the Jewish world, the various kosher symbols are the assurance that the product meets rigorous cleanliness and purity standards. There are also some issues with the various rabbinic councils who certify. read more