STEP 1/6
Pour chocolate milk into a saucepan, add 40g of sugar, and place in a saucepan
STEP 2/6
When the milk is warm, remove from the heat, cover it dark, melt 65g, cool it to a lukewarm level, dissolve the egg yolk, add the remaining amount of sugar and stir with a whisk.
STEP 3/6
When the egg yolk is light, pour in half, mix well, and boil over medium heat, stirring with a whisk, until thick.
STEP 4/6
Whip the whipped cream (harder than the milkshake) to the point where it leaves a slight mark and sift out the lukewarm 6 in a bowl containing the whipped cream.
STEP 5/6
Mix evenly with whisk, place in freezer and stir with fork, etc. every 2 hours. Repeat this process 2 to 4 times.
STEP 6/6
Cut 40g of dark cover into small pieces, add dark cover and mix at the last stirring, then freeze the ice cream in the freezer.