We know quite well that St. John the Baptist had a rather unique diet while living his ministry on earth. John lived an austere life.
4 John’s clothes were made of camel’s hair, and he had a leather belt around his waist. His food was locusts and wild honey. 5 People went out to him from Jerusalem and all Judea and the whole region of the Jordan. 6 Confessing their sins, they were baptized by him in the Jordan River. - Matthew 3:4
Further more we know that he did not drink either wine or strong drinks.
15 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. - Luke 1:15
According to biblical patristics, what is the historical interpretation of what constituted a strong drink at the time of John the Baptist? Was it simply another form of alcoholic beverage like beer, a type of liquor or a drink laced with some type of drug?