01 - 
                Chop 2 1/2 donuts into small pieces. If using a thermomix, grind for 5 seconds at speed 8.
              
              
              
                02 - 
                Add the milk, eggs, sugar, and cornstarch to the ground donuts. Blend for 30 seconds at speed 4 if using a thermomix. Alternatively, mix manually or with a hand mixer until fully combined.
              
              
              
                03 - 
                For thermomix: Program 10 minutes at 90°C, speed 4, until the mixture thickens. For stovetop: Heat mixture in a saucepan over low heat, stirring constantly until slightly thickened.
              
              
              
                04 - 
                Pour the custard into serving glasses or containers. Allow to cool completely at room temperature or in the refrigerator.
              
              
              
                05 - 
                Garnish each serving with small pieces of the reserved 1/2 donut.