We read in Neh 8:10:
Nehemiah said, “Go and enjoy choice food and sweet drinks, and send some to those who have nothing prepared. This day is holy to our Lord. Do not grieve, for the joy of the Lord is your strength.”
We also read in Lk 1:1615, of the ensuing birth of John the Baptist:
"For he shall be great in the sight of the Lord, and shall drink neither wine nor strong drink; and he shall be filled with the Holy Ghost, even from his mother's womb."
So, there were three categories of drinks that the Jews normally had: sweet drink, wine and strong drink. Let us consider unfermented fresh grape juice as sweet drink, and fermented wine as one step below strong drink. It would imply that strong drink was made of something else other than grapes.
So, what were the ingredients of soft drink and strong drink as mentioned in Nehemia and Luke?