There is a coffee brewer at my husband’s work that is shared by all the employees. Can my husband brew coffee in it too?
Using the coffee brewer in a place shared by Jews and non Jews can have a potential problem regarding the ingredients used. You have to make sure that the coffee used is kosher. Regular non flavored coffee is alright, but they have a lot of different types nowadays. Also if anything else such as milk, creamer etc. are put in, that also needs to be checked out, if you are careful about cholov stam etc.