Melt butter in hot water and let it cool slightly.

In a large bowl, combine 3 cups of flour, yeast, sugar, and salt.

Add the water and melted butter mixture to the dry ingredients.

Mix well with a mixer.

Gradually add the remaining flour until a stiff dough forms.

Knead the dough for 5 minutes until smooth and elastic.

Let the dough rise in a warm place for about 1 hour, or until doubled in size.

Punch down the dough and shape it into a loaf.

Place the loaf on a baking sheet.

Brush with egg white mixed with water.

Bake in a preheated oven at 375°F (190°C) for 30 minutes, or until golden brown.