The Cake In Minecraft Was Added In 2010 And For Crafting It, You Need 3 Milk, 2 Suger, 1 Egg, And 3 Wheat. It Was Used To Get The Achievement “The Lie” (It Was A Reference To Portal 1 “The Cake Is A Lie”). But It Got Removed In 1.12 Due To Advancements For A Replacement (It Is Still In Windows 10 Edition, PE, And Console Edition).
Minecraft Wiki 