Ukrainian
Dissolve the yeast and 1 tsp of the sugar in the warm milk and leave for 10 minutes, until foamy.
Add the rest of the sugar, the melted butter, egg and salt, then the flour, and knead for 10 minutes into a soft, smooth dough; cover and let rise for 1-1.5 hours, until doubled.
Meanwhile pour the boiling water over the poppy seeds, leave for 30 minutes, drain well in a fine sieve and grind them twice in a meat grinder or a blender.
Mix the ground poppy seeds with the 120 g of sugar, the honey and the soft butter.
Divide the dough in two, roll each piece into a 30 x 35 cm rectangle, spread with the filling leaving a 2 cm border and roll up tightly from the long side; pinch the seam and ends shut.
Place the rolls seam side down on a lined baking sheet, let rise for 30 minutes, brush with the beaten egg and prick in a few places with a skewer.
Bake at 180C for 35-40 minutes, until deep golden, and cool before slicing.