A method of making bread is provided. The method includes a thermally treated dough making process of forming a thermally heated dough, a dough mixing process of mixing the thermally treated dough of the thermally treated dough making process with wheat flour, dried yeast, refined sugar, refined salt, whole milk powder, bread improver, processed butter, milk, egg, and water to form a dough mixture, and stirring the dough mixture, a deep-freezing process of dividing the dough mixture into equal-sized dough pieces and deep-freezing the divided dough pieces, a thawing process of thawing the deep-frozen dough pieces, a fermentation process of fermenting the thawed dough pieces, and a baking process of heating the fermented dough pieces.