Custard, also called pastry cream (crème pâtissière), is made with a combination of milk, egg yolks, fine sugar, flour  and usually a flavoring such as vanilla, chocolate, or lemon. Crème pâtissière is a key ingredient in many French and Italian desserts.

Here is the recipe!

Ingredients 原料

• 2 egg yolk – 2个蛋黄
• 500 ml milk – 500 升牛奶
• 4 tbsp flour – 4 汤匙面粉
• lemon zest (from 1 lemon) – 1个柠檬皮
• 1/2 cup sugar – 100克白糖

Note: pictures show half quantity of the above listed ingredients.

Beat egg yolks,sugar and lemon zest together. 把蛋黄，白糖和柠檬皮搅打一起

Add flour and mix until smooth. 加入面粉混合

Slowly pour in milk. 慢慢倒入牛奶

Bring it to a boil at low heat. Boil for 5 min. 用小-中火煮5分钟