The Divine Sake is a special sake created by Mizuki. He gained the ability due to his god, Yonomori Mitsuha only drinking sake. It is said to have a crisp, smooth, nostalgic taste and purifying abilities. The words pasted on front is 夜の森 (Yonomori).
However, once the sake dries up, its effects are nullified. It was also drunk to celebrate Yukiji's marriage proposal.