Grease a baking sheet/tray. Sieve flour and salt in to a bowl, Stir in yeast and caraway seeds. In small sauce pan , gently heat butter, milk and coffee. Stir in sugar to dissolve. Mix in all the ingredients thoroughly. Knead well until smooth and elastic. Put in a large bowl, cover loosely with plastic wrap and let it stand to rise (about 2 hrs). Knead lightly on floured surface for 2-3 minutes. Divide in 8 role each piece with a knot in the center. Place on greased baking sheet. Cover and let it rise in a preheated oven for 15-20 minutes. Brush with beaten eggs and sprinkle with caraway seeds