Wine or Beer?

DR. ELAINE GOODFRIEND: Shekhar: Is it Wine or Beer? (TheTorah.com).

The nazir must abstain from shekhar (שֵׁכָר), and it must be poured on the altar as a libation – but what is it? Understanding the ecology of ancient Israel can help answer the question.

It would have been cool if it had turned out to be single malt, but that doesn't seem to be an option.