ANKARA (Turkey), October 20 (SeeNews) -Â Fitch Ratings said it has assigned Turkey's food and beverage maker Ulker Biskuvi Sanayi A.S. a long-term foreign-currency (FC) issuer default rating (IDR) of 'BB-(EXP)' with a negative outlook and long-term local-currency (LC) IDR of 'BB(EXP)' with a stable outlook.