Boiled Custard Sauce - cooking recipe

Ingredients

3 egg yolks, beaten
pinch of salt
1/4 c. sugar
2 c. milk
bowl of ice water
2 tsp. vanilla extract

Preparation

Beat the yolks in a bowl.
Add in salt and sugar and stir well with spoon.
Heat the milk to the ??? point.
Remove from the burner and pour milk into bowl with beaten egg yolks, stirring as you pour.
Clean saucepan and pour in the milk and egg mixture. Place over medium burner, stirring constantly, until the custard shows a definite coating of the spoon.