What was naruto's favorite jutsu before he met jiriaya?

The Jutsu that Minato(Naruto's dad) and Jiraiya wanted naruto to master is the full 9 tailed transformation of the fox. Just as how Killer Bee has full control and a mutual relationship with the 8 tailed Ox Bijuu, Minato wanted Naruto to master the jutsu.

Naruto having full control(if at all possible) of the nine tails power would give him a chance to take on Uchiha Madara.