Sourdough not sour?
My starter is just over a month old, active as the Blob(left it out of the fridge by mistake one day and it tried to eat the counter), and gives great texture to bread, pizza, crepes, pancakes, and tortillas.
But it is not sour. Made it from white whole wheat flour, switched to bread flour(White Lily), and I feed it every three or so days at 100% hydration.
Is it the nature of the beast to be less sour sometimes?

Thanks to all for your input. I think I finally have it. Southeastern Michigan has a wimpy starter, just Like UM's football team used to be. Spiking with rye flour did the trick, but only for a while. Less starter, longer ferment, and cold proofing also got me more sour flavor.
However, I'm starting to believe that the point of sourdough is the texture and moistness of the finished product(the tortillas from northwestsourdough are superb). Same result with pancakes, crepes, pita bread, etc.
My first rye(Rose's recipe) made me a believer in both the increase in sour flavor from rye, time, and stinginess with starter as well as the keeping power and texture benefits of sourdough.
Again, thanks to all for your time and expertise.
Oh, I almost forgot GO BUCKS!