PROBLEM TO BE SOLVED: To provide a bitter taste applying agent for giving a flavor obtained by roasting having sufficient bitter taste to a food product and a production method thereof.SOLUTION: Provided is the production method of a bitter taste applying agent for giving roasted bitter taste, in which fat and wheat flour at a mass ratio of 30:70-95:5 are subjected to roasting processing until reaching to 180-200°C. The bitter taste applying agent obtained by the method, is also provided.