I got the japanese soba with peanut butter sauce recipe from Moby's book called Teany Book. I didn't have all the ingredients but it was delicious!
The sauce had sesame oil, soy sauce, chilli sauce and peanut butter.
Japanese Soba (Buckwheat noodles)
I added some ground Turkey gyzoas. I found this recipe online.
The finished results with fresh cut carrots: