Mocha Cookies
                            
                                1.
                                Prepare the necessary ingredients;
                                    
                            
                            
                                2.
                                Mix butter and icing sugar until the volume expands; add egg white and mix well;
                                    
                            
                            
                                3.
                                Add a spoonful of water to the coffee and stir well, pour it into the mixture of egg and butter, and beat evenly;
                                    
                            
                            
                                4.
                                Sift in low-gluten flour and mix evenly with a rubber spatula until no dry flour is visible;
                                    
                            
                            
                                5.
                                Put the mixed dough into the piping bag, cut a small opening of about 0.7cm in the piping bag, and extrude a snail shape on the baking tray;
                                    
                            
                            
                                6.
                                The temperature of the oven is 175 degrees, the time is 12 minutes, and it is ready to be placed in the baking tray after preheating.
                                    
                            
                            
                                Tips: 
                                1. This is a basic butter biscuit, which is basically a fool's level. The addition of coffee makes the taste unusual and the crunchy texture is also very attractive;
 2. When squeezing the batter with a piping bag, if the novice feels that it is not easy to control, you can choose the vertical squeeze method;
 3. This kind of basic biscuits, do not be lazy in every step, and the ingredients used are integrated in place, and the result must be ideal.