talk turkey

talk turkey
(discuss something seriously, usually to do with business or money)
говорить дело, разговаривать по-деловому; вести деловую беседу; || говорить начистоту (also talk cold turkey)

Examples:
Now you're talking turkey. — Вот теперь ты дело говоришь. Вот это другой разговор.

I started to say something about the deal, but Mr Hamilton said, "Not now, my boy. We never talk turkey at the dinner table."