In brief
Crème pâtissière is a cooked pastry cream used in éclairs, fruit tarts and other fillings.
Useful to know
Crème pâtissière is a cooked pastry cream used in éclairs, fruit tarts and other fillings. King Arthur’s recipe thickens milk, sugar, yolks and cornstarch by heating. [1]
This distinguishes it from simply whipped cream. Hot milk is gradually introduced into the egg mixture before cooking continues as directed. Adding random starch to a finished cold cream will not reproduce the same structure. Use the cooled consistency specified for assembly: warm and chilled filling can behave differently inside hollow pastry.
Sources
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