Buying Coffee In A Non-Kosher Establishment

if all they do is sell coffee then you could buy that coffee even if they're not supervised provided that the coffee is not a flavored coffee because flavored coffee needs supervision the way i explain buying a coffee in a store that sells non-kosher food let's say you have a dishwasher for meat and you open up your dishwasher there's a milky spoon in your dishwasher and people call me they want to throw out the dishwasher they want to throw out their spoons they want to throw out everything and i could not now give you a number of reasons why that's not such a big deal but in this store that's selling really really non-kosher food they're using the same dishwasher for things that are really not kosher and would you want to use that spoon to make your coffee and therefore my personal feeling is that one should not buy a coffee in a establishment that sells non-kosher food