懒人版【蛋挞】5分钟搞定，满屋飘香，是我吃过最好的蛋挞 Just 5 minutes, Can't Stop Repeating This Recipe, Easy Egg Tarts

Egg Custard Fill for 15 - 16 tarts:
Large Egg Yolk: 3
Sugar: 25 - 30 g
Corn Starch: 10g
Milk: 100 ml
Whipping Cream: about 250 ml