Ute- I visited Germany two years ago, and I loved the food, particularly the Brotchen. I was touched by your longing for them. I found this recipe for you on a German food website.
Brötchen
(Rolls)
Ingredients
1 lb. bread flour
1 tsp. salt
1 package yeast (rapid rise)
1 1/2 c. (about) lukewarm milk
1/2 oz. butter or maragarine
grease for the pan
5 tbsp. milk mixed with 1/2 tsp. sugar for coating
Preparation
Mix the flour and salt. Dissolve yeast in 1/2 cup milk and stir in some of the flour/salt mix to make a fluid batter. Cover and let rise for about 20 minutes. Dissolve the butter or margarine in the milk. Add the rest of the flour and milk.

Knead the dough until it comes away easily from the side of the bowl. Flour the bowl and let the dough rise for about 1 1/2 hours. Form the dough into about 12 rolls and set them on a greased baking sheet. Let rise for about 10 minutes. With the back of a knife, make a long indentation in every roll. Brush with water and bake in a preheated 400 degree oven for about 20-25 minutes. After removing from the oven, brush with the sweetened milk immediately.