0
That is the correct spelling "danish" (sometimes capitalized) for the type of filled pastry.
no
The dough used to make Puff pastry and Danish pastry is folded many times to create the multiple flaky layers of crisp baked pastry.
Wienerbrød
Laminated doughs, such as those used for Croissants and Danish pastries contain yeast to aid leavening. Puff pastry does not contain yeast.