Learn Turkish: Kahve var, çay yok. - There is coffee; there is no tea.

Var means 'there is' or 'exists', and yok means 'there is not' or 'does not exist'. They are opposites used to tell people what is or is not available.

Why do var and yok come after the nouns instead of before them?

Turkish word order typically places the main verb or action at the very end of the sentence. Even though var and yok are not traditional verbs, they act like them here. Instead of 'There is coffee', Turkish literally says 'Coffee exists' (Kahve var).

Is it okay to omit a connecting word like 'but' between the two phrases?

Yes! In Turkish, you can easily place two contrasting statements side-by-side separated only by a comma. If you wanted to emphasize the contrast, you could add ama (but) to make it Kahve var, ama çay yok, but the comma alone is perfectly natural.

Why is there no word for 'some' or 'a' before the drinks?

Because coffee and tea are being talked about generally as substances, you do not need to add bir (a/one). Just kahve and çay are enough to express the general concept without extra words.