2. Stir the egg yolk and sugar together, add the milk and stir well. Sift in cocoa powder, which can be replaced by matcha powder or something you like, mix well, heat with low fire until the liquid is slightly viscous, turn off the fire and let it cool;
3. Beat the whipped cream until the particles are clear and do not disappear. Mix one third of whipped cream and cocoa egg milk evenly;
4. Pour it back into the whipped cream and stir well;
5, pour into the box, freeze for more than 4 hours to eat.