11 And it came to pass that I did go forth and partake of the fruit thereof; and I beheld that it was most sweet, above all that I ever before tasted. Yea, and I beheld that the fruit thereof was white, to exceed all the whiteness that I had ever seen.
Margaret Barker, non-LDS biblical scholar, from page 8 of this paper:
The tree of life made one happy, according to the Book of Proverbs (Proverbs 3:18), but for detailed descriptions of the tree we have to rely on the noncanonical texts. Enoch described it as perfumed, with fruit like grapes (1 Enoch 32:5), and a text discovered in Egypt in 1945 described the tree as beautiful, fiery, and with fruit like white grapes. I do not know of any other source that describes the fruit as white grapes. Imagine my surprise when I read the account of Lehi’s vision of the tree whose white fruit made one happy, and the interpretation that the Virgin in Nazareth was the mother of the Son of God after the manner of the flesh (1 Nephi 11:14-23). This is the Heavenly Mother, represented by the tree of life, and then Mary and her Son on earth. This revelation to Joseph Smith was the ancient Wisdom symbolism, intact, and almost certainly as it was known in 600 bce.
