What is this Fruit?

Alma 32:42

And because of your diligence and your faith and your patience with the word in nourishing it, that it may take root in you, behold, by and by ye shall pluck the fruit thereof, which is most precious, which is sweet above all that is sweet, and which is white above all that is white, yea, and pure above all that is pure; and ye shall feast upon this fruit even until ye are filled, that ye hunger not, neither shall ye thirst.

1 Nephi 8:10-11

And it came to pass that I beheld a tree, whose fruit was desirable to make one happy.

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.

1 Nephi 11:8

And it came to pass that the Spirit said unto me: Look! And I looked and beheld a tree; and it was like unto the tree which my father had seen; and the beauty thereof was far beyond, yea, exceeding of all beauty; and the whiteness thereof did exceed the whiteness of the driven snow.

1 Nephi 15:22, 36

And I said unto them: It was a representation of the tree of life. . .

Wherefore, the wicked are rejected from the righteous, and also from that tree of life, whose fruit is most precious and most desirable above all other fruits; yea, and it is the greatest of all the gifts of God. And thus I spake unto my brethren.

D&C 14:7

And, if you keep my commandments and endure to the end you shall have eternal life, which gift is the greatest of all the gifts of God.