Abu Ubayd (may Allah have mercy on him) says: Many reports have come regarding drinks, under different names, from the Prophet (peace and blessings be upon him) and his Companions (may Allah be pleased with them), and each has an explanation. The first of them is al-khamr: it is grape juice that has fermented, and there is no disagreement among the Muslims about its prohibition; the disagreement is only about the others. Among them is al-sakar: it is an infusion of dates untouched by fire, and about it it is narrated that Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) said: Sakar is wine. Among them is al-bit': it is honey wine. Among them is al-ji'ah: it is barley wine. And among them is al-mizr: it is made from corn.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الأشربة والحد فيها / 17385