Czech Butter-Stamped Buns (Homemade Rolls)

Name: Czech Butter-Stamped Buns (Homemade Rolls)
Prep time: 1 h
Cook time: 10 min
Total time: 1 h 10 min
Yield: 16
Ingredients: 100 ml water; 1 tsp sweetened condensed milk or malt extract; 9–10 g yeast; 125 g plain flour; 200 ml milk; 25 g butter; 1.5 tsp salt; ½ level tsp sugar; 125 g plain flour; 125 g all-purpose flour; 125 g wheat bread flour; seeds, as needed