In my mom’s German Friend Group, she is famous for her Silesian Poppy Seed Roll with Streusel. (Although, to her, it’s just called “Mohnkuchen.”) Made with enriched yeast dough, a filling of Poppy Seed and raisins, and topped with a crunchy, flavorful Streusel, it’s usually the first to disappear from the table! Since I was a child, I didn’t want…