It is Naruto 168 here's the link:
http://www.tailedfox.com/page-naruto-episode-168
TailedFox is a very good site to watch Naruto and Naruto Shippuden episodes.
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Episode 90 You Can Watch It Naruto-tv.com
He usually orders miso ramen at at Ichiraku. Although, through out the manga and Television series, he has been known to order other flavors (chicken, seafood, beef) and side extras (egg, vegs, etc).
I think it's episode 95 of Naruto Shippuden... :)
Ichiraku
Iruka is Naruto's first sensei. He instructed Naruto's first classes, and fought to defend Naruto when Naruto was tricked into stealing the village's secret scrolls. Although Iruka was not an Naruto's instructor for very long, he was a constant quiet support. Iruka usually wore the basic ninja uniform and vest, had short black hair with a ponytail, and had a scar that ran cheek to cheek over the bridge of his nose.