French Buttercream Rich Custard Base

French Buttercream Rich Custard Base

This French buttercream combines crème anglaise, Italian meringue, and butter for a smooth frosting that can be used for cakes, pastries, and fillings. It is richer than many other buttercreams and benefits from careful temperature control during mixing.

Main Components

The custard base brings egg yolk richness, the Italian meringue adds volume, and the butter provides the final structure. When all three components are at compatible temperatures, the mixture emulsifies into a smooth frosting.

Mixing Process

• Cook the crème anglaise to 80°C (175°F), then cool it.
• Beat the butter until smooth before streaming in the cooled custard.
• Prepare the Italian meringue with syrup cooked to 120°C (250°F).
• Add the meringue in portions and mix until the buttercream is fully combined.

Uses

• Frost layer cakes
• Fill macarons
• Pipe onto cupcakes
• Use in pastry assembly where a richer butter-based filling is needed

Storage

Store the buttercream in the refrigerator for up to 5 days or freeze it for up to 1 month. Bring it back to cool room temperature and re-whip before using if the texture has stiffened.