"Food for thought" in a word

There is an uncommon word thoughtworthy: (used as thought-worthy also)

Worthy of thought or of being thought; considerable.

[en.wiktionary.org]

Though, considerable is a more common word with a close meaning but does not seem like a good fit for your example.

As a native American English speaker, the first word that came to mind for me was "thought-provoking." Macmillan dictionary defines thought-provoking as follows:

Thought-provoking - adjective - interesting in a way that makes you think of new ideas or that changes your attitude to something

intriguing

adjective 1. arousing great interest or curiosity

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition http://www.collinsdictionary.com/dictionary/english/intriguing?showCookiePolicy=true

I don't know if a single word exists meaning "food for thought" or "worthy of consideration"; perhaps the closest modern English has is:

noteworthy

noteable

Or, with a slightly different hue:

memorable