Fluffy patties with egg and green onions in a pan! A special ingredient for fluffier dough

Ingredients:
► warm milk 300 ml
► egg 1 pc
► dry yeast 7 g
► salt 1 tsp
► sugar 1 tbsp
► apple cider vinegar
► flour 550 g
► butter 40 g + 2 tbsp
► 6 boiled eggs
► green onions