Start with Grinding poppy seeds in coffee grinder, you want as fine grains as possible. I usually add a little sugar at each batch it will help the seeds break down a bit better (or add a small amount of raisins instead of sugar). In a pan heat milk with sugar and bring to a boil, then take it off the heat. Add ground poppy seeds, raisins, ground cinnamon and lemon zest. Mix well and let cool completely.

Roll out your puff pastry and cut in half then roll each as thin as possible. Spread the cold poppy seed filling evenly along the dough, leaving about 1 inch along the sides. Roll the dough tightly around the filling and place on baking sheet. Brush strudel with melted butter.

Place into pre-heated oven and bake for about 20-25 minutes or until light brown.

Remove from oven and let cool before slicing. Dust with powdered sugar, slice into 10-12 and enjoy.