What is a nursery tea?

Nursery Tea - English version

Ingredients:

1 cup milk

1 teaspoon Hot Tea, strongly brewed

1 teaspoon sugar

1/2 teaspoon vanilla extract

Method:

Heat milk along with the vanilla, add the sugar and stir to dissolve. Add the strong tea.

When I make this I use the Cambric version and add a little vanilla. I am usually making a cup of tea for myself and just use some tea in my cup for the nursery tea.