Ermine Frosting Recipe: Silky Fluffy Classic

Question 1

What is ermine frosting?

Accepted Answer

Ermine frosting is a classic American buttercream made by cooking a flour-milk roux into a thick paste, cooling it completely, then whipping in butter and sugar until light and fluffy. Popular in vintage recipes like Red Velvet cake, it has a velvety texture that's less sweet than traditional buttercream and holds up well in warm weather without melting. The cooked flour base eliminates the raw flour taste and stabilizes the frosting naturally. It's ideal for layer cakes, cupcakes, and fillings. A basic recipe starts with ¼ cup all-purpose flour, 1 cup whole milk, 1 cup granulated sugar, and 2 sticks unsalted butter—cook the roux over medium heat until thickened like pudding, chill for 1-2 hours, then beat in softened butter and sugar for 5-10 minutes. Yields enough for a two-layer 9-inch cake.

Question 2

How do you make ermine frosting step by step?

Accepted Answer

To make ermine frosting, first prepare the roux: whisk ¼ cup flour into 1 cup milk in a saucepan over medium heat. Stir constantly until it thickens to a pudding consistency (about 5-7 minutes), then cool fully in the fridge for 1-2 hours. In a stand mixer, beat 2 sticks (1 cup) softened unsalted butter with 1 cup granulated sugar on high for 3-5 minutes until pale and fluffy. Gradually add the chilled roux, beating on medium-high for another 5 minutes until smooth and spreadable. Add vanilla extract for flavor. Tips: Use room-temperature ingredients, beat thoroughly to remove graininess, and avoid overcooking the roux. This yields about 3 cups, perfect for frosting a 9-inch cake. Store extras in an airtight container.

Question 3

What's the difference between ermine frosting and American buttercream?

Accepted Answer

Ermine frosting uses a cooked flour-milk base for stability and a subtle milky flavor, making it less sweet and more heat-resistant than American buttercream, which is just butter, powdered sugar, vanilla, and milk or cream beaten together. Ermine has a smoother, less gritty texture without powdered sugar's chalkiness and holds peaks better for piping in humid conditions. American buttercream is quicker (no cooking) but can crust over time and melt easily. Ermine takes longer due to cooling but tastes more like whipped cream. Both pipe well, but ermine suits vintage cakes like hummingbird or carrot. Switch to ermine for outdoor events—it's stable at room temperature for days without weeping.

Question 4

Can ermine frosting be piped and decorated with?

Accepted Answer

Yes, ermine frosting pipes beautifully once fully whipped to stiff peaks, thanks to its stable roux base. Chill the mixed frosting for 15-30 minutes if too soft, then use a piping bag with tips like Wilton 1M for swirls or 21 for stars on cupcakes. It holds shape without spreading, even in warm kitchens, outperforming shortening-heavy frostings. Add gel colors sparingly during beating to maintain consistency. For borders on cakes, pipe at medium pressure. Pro tip: If it softens while working, pop it in the fridge briefly. Many bakers prefer it over cream cheese frosting for clean edges. Practice on parchment first to nail your design—results rival professional buttercream.

Question 5

How long does ermine frosting last and how should you store it?

Accepted Answer

Freshly made ermine frosting lasts 3-5 days at room temperature in an airtight container, up to 2 weeks in the fridge, or 3 months frozen. Its cooked base resists spoilage better than egg-based frostings. To store, press plastic wrap directly on the surface to prevent a skin forming, then seal. Thaw frozen frosting overnight in the fridge and re-whip briefly to restore fluffiness—avoid microwaving. Frosted cakes stay fresh 2-3 days covered at room temp. Signs of spoilage: off smell or mold. For events, frost cakes a day ahead. Always use fresh dairy; unsalted butter extends shelf life. This makes it great for make-ahead baking.

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