01 - In a large mixing bowl, combine warm milk, dill pickle brine, granulated sugar, and active dry yeast. Allow mixture to rest for 5 minutes until foamy.
02 - Add softened butter, egg, and salt. Mix thoroughly to combine.
03 - Gradually incorporate all-purpose flour, stirring until a soft dough is achieved.
04 - Transfer dough onto a floured surface and knead for 8 to 10 minutes, until smooth and elastic.
05 - Place dough in a greased bowl, cover, and let rise in a warm location for 1 hour, or until doubled in volume.
06 - Punch down the risen dough, then roll out to a 12x16-inch rectangle.
07 - Evenly spread softened butter across the dough. Sprinkle with chopped dill pickles, fresh dill or dried dill, and granulated sugar.
08 - Tightly roll up dough from the long edge; pinch the seam to seal securely.
09 - Cut the rolled dough into 12 equal pieces and arrange them in a greased 9x13-inch baking pan.
10 - Cover the pan and allow buns to rise for 30 to 40 minutes, until visibly puffy.
11 - Set oven temperature to 350°F.
12 - Whisk egg yolk and milk together, then brush mixture over risen buns. Optionally, sprinkle with sesame seeds.
13 - Bake buns at 350°F for 22 to 25 minutes until golden brown.
14 - Allow buns to cool slightly before serving.