There is no harm in nabidh made from bukhtuj.
أخبرنا سويد قال أنبأنا عبد الله عن سفيان عن مغيرة عن أبي معشر
لا بأس بنبيذ البختج
No references are available.
[Its chain is daif] It is in Sunan al-Kubra, hadith no. 5258. Sufyan Thawri and his teacher both narrated using "an" without specifying direct hearing, and Abu Mashar is perhaps Ziyad bin Kulayb.