If you ever find yourself in the Fountain Valley area --head over to Ebisu for the Takoyaki. Perhaps the best version of the dish I have had so far. They make it fresh as you order it, given that they warn you that it will take 15+ minutes to prepare.
At around $5, it is very reasonable for the quality and portion. They do not skimp on the Tako either, which is a nice change of pace. When you bite in to a piece, the steam escapes and the texture is wonderfully soft in contrast to the crisp exterior. The batter is excellent too, slightly smokey and sweet from the dashi broth.
Fellow diner had an incredible anko (red bean) ice cream-shaved ice, which looked like a scene out of the dotch cooking show. The Rev. of the Orange County Buddhist Temple next to us, had a Hiyashi Chuka, that also looked very good.