Allow the butter to soften.
Mix the flour, vinegar, oil and butter, adding just enough water and kneading well until the dough is at an even consistency.
Refrigerate for 30 minutes and roll out thinly.
Trim to a long, rectangular shape.
Mix together the honey, nuts, raisins and poppy seeds.
Onto the shorter edge of the rolled out dough spoon out a line of filling.
Fold over and then repeat this spooning and folding process until all the ingredients are used.
Place the roll on a greased cake pan and bake in an oven that has been preheated to 330 degrees Fahrenheit (170 Celsius) until done (about 1 1/2 hours).
Serve warm or cool.
(Source: Daniel Rogov)