30 days
Is Pupa Tzelem tastier than Chareidim?
Haven't tasted Pupa Tzelem in a while, but my recollection of the last time I did was that it was like paper.
Bottom line IMHO is that for flavor you need Whole Wheat. The real thin matzos won't work well with Whole Wheat, you will get Matzo Meal! Best flavor is spelt, but that is also the most $$$.
As long as it's baked well, and moisture is kept away (I make sure all my matzos are packed in 2lb corrugated boxes, so I don't open one big box and let moisture in to the entire lot) even if not so thin, they can be quite crispy.