User blog comment:Jedi.Elf.Queen/Lembas/@comment-1038387-20140320212221

Purist buzzkill, coming through: Elvish new year (Yestarë) is Astron 6 (April 6) by Shire-reckoning... which is roughly March 29 on the Gregorian calendar, not counting leap years.

Also, there's no canon recipe for Lembas. There aren't even canon ingredients.