Old Fashioned Fluffy Frosting

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 I am officially the mother of a teenager.

I am not even really sure how that happened, it seems like yesterday I had her.  13 years have gone by, in what seems like the blink of an eye.

While I am trying to adjust to the fact that my baby is 13, My daughter already has the teenage thing down pat.

When I asked her what kind of frosting she wanted on her birthday cake this was her reply: “I don’t care, but I don’t like shortening frosting, and I don’t like frosting that feels gritty”

Ok, then.

I am not sure why she feels buttercream frosting is gritty, I have always made it with confectioners sugar, and grittiness has never really been a thing I have noticed.

I got to thinking about different kinds of frosting and remembered an old recipe I have for a frosting that cooks up nice and fluffy and tastes like marshmallow cream.

This recipe for Old Fashioned Fluffy Frosting is an old recipe. You can find it in old cookbooks, usually named 7-minute icing. It actually takes a little longer than 7 minutes to make this frosting but is completely worth it.  The frosting is light, fluffy, and pure white.

And according to my daughter not gritty at all 🙂

What Is Old Fashioned Fluffy Frosting?

If this frosting looks familiar but you can’t quite place the name, that’s because it goes by about six of them.

Depending on whose kitchen you grew up in, you might know it as 7-minute frosting, boiled icing, beat-and-eat frosting, or finger frosting. The brown-sugar version is often called sea foam. They’re all cousins of the same idea: a hot sugar syrup beaten into whipped egg whites until the whole thing turns glossy, white, and marshmallow-soft.

The old “finger frosting” name comes from the way our grandmothers judged the temperature, the story goes that you stirred the syrup with a finger until it was almost too hot to stand (don’t actually do this — a candy thermometer or the timing below is safer). “Boiled icing” points to the same method. And “beat-and-eat” is exactly what it sounds like: no shortening, no long list of ingredients, just beat it and frost.

What all these names have in common is that this is old, thrifty, pantry-staple baking. Five ingredients you already have. No butter, no confectioners sugar, nothing fussy. It’s the frosting a lot of us remember from a specific person’s kitchen, and going by my comments, that person was almost always a mom or a grandmother.

Why You’ll Love This Frosting

• It tastes like marshmallow cream — light and sweet without the heaviness of buttercream.
• It’s genuinely not gritty. No confectioners sugar means no chalky, sandy texture (the whole reason this recipe made it back into my rotation).
• Five ingredients, all pantry staples.
• Pure white and glossy, so it takes food coloring beautifully if you want it to.
• No butter or shortening, which makes it lighter than most frostings and a nice change of pace on a rich chocolate cake.

It does have one honest catch, which I’ll be straight with you about in the storage section: it’s a same-day frosting. It’s at its absolute best the day you make it. More on that below.

Ingredients (and Why Each One Matters)

• 1 cup white (granulated) sugar — Use granulated, not powdered. A reader asked about this and it’s worth saying up front: granulated dissolves into a clean syrup. Powdered sugar will work and makes it sweeter, but it takes longer to break down as it cooks.
• 1/3 cup water — Dissolves the sugar into the syrup that does all the work.
• 1/4 teaspoon cream of tartar — Don’t skip this one. Cream of tartar is a mild acid that stabilizes the egg whites and discourages the sugar from recrystallizing. That’s the secret behind the smooth, not-gritty texture my daughter was after.
• 2 egg whites — The structure. Whipped into a foam, they trap air; the hot syrup then sets them into that glossy, marshmallowy finish.
• 1 teaspoon vanilla extract — For flavor. Easy to swap (see Variations).

Equipment You’ll Need

Nothing super fancy, but two notes save a lot of hassle:

• A stand mixer is a real help here. You have to beat the egg whites constantly while pouring in the hot syrup, and doing that one-handed with a hand mixer is awkward. A hand mixer works if you’ve got a second person to pour, or steady nerves.
• A candy thermometer is optional but useful. The recipe doesn’t require you to hit a specific temperature, but if you’ve ever had a fluffy frosting go soft and slide off the cake, cooking the syrup a little further (to soft-ball stage, about 240°F) gives you a sturdier result. I’ll flag this again in Troubleshooting.

Jennifer Morrisey

Old Fashioned Fluffy Frosting

5 from 1 vote

This recipe for Old Fashioned Fluffy Frosting is an old recipe. You can find it in old cookbooks, usually named 7-minute icing. It actually takes a little longer than 7 minutes to make this frosting but is completely worth it.

Print Recipe Pin Recipe

Prep Time 5 minutes mins

Cook Time 10 minutes mins

Total Time 15 minutes mins

Ingredients Method

Ingredients

  

• 1 cup white sugar
• 1/3 cup water
• 1/4 teaspoon 1/4 teaspoon cream of tartar
• 2 egg whites
• 1 teaspoon vanilla extract

Method

 

1. In a saucepan, stir together the sugar, water and cream of tartar. Cook over medium-high heat until the sugar is dissolved and the mixture is bubbly.
2. In a medium mixing bowl, whip the egg whites and vanilla until soft peaks form.
3. Gradually add the hot sugar mixture while whipping constantly, for about 7 to 10 minutes, until stiff peaks form.
4. Frost the cake of your choice.

Tried this recipe?

Let us know how it was!

Tips for Success

• Start with a clean, grease-free bowl. Any fat — even a smear from a previous batter — keeps egg whites from whipping up. Glass or metal is always better for making this kind of frosting instead of plastic.
• Pour the syrup slowly, down the side of the bowl. A thin, steady stream keeps the hot syrup from cooking the whites into scrambled bits or splattering up the sides.
• Don’t stop beating. Constant motion is what gives you that stiff, glossy, marshmallow finish.
• Use it fresh. This frosting is happiest the moment it’s ready. Have your cake cooled and waiting before you start making this frosting.

Troubleshooting

This section is built almost entirely from questions readers have left me over the years, if you tried this frosting and something went sideways, you’re not alone.

My frosting slid down the sides of the cake / seemed to melt overnight. This is the most common one. Fluffy frostings are meringues, and meringues don’t love warmth or humidity. If the kitchen is hot, or the cake sat out overnight, the frosting can soften and slip. Two fixes: serve the cake the day you make it, and if you want a sturdier frosting that holds up better, cook the syrup a little further — to soft-ball stage, about 240°F on a candy thermometer, before beating it in.

A firm, thin crust formed on the surface. Did I do something wrong? Not at all, that’s exactly what this frosting is supposed to do. A boiled/7-minute frosting sets up a delicate crust on the outside while staying soft and marshmallowy underneath. If you grew up on angel food cakes frosted with something that firmed slightly on top, this is that frosting.

It never got stiff. Usually one of three things: a trace of grease in the bowl or on the beaters, egg whites that had a speck of yolk in them, or the syrup wasn’t hot enough when it went in. Start clean, separate your eggs carefully, and make sure the syrup is genuinely bubbly.

It’s weeping little beads of syrup. Meringue frostings can weep in humid weather or when they sit too long. It’s a same-day frosting for a reason, make it close to serving time.

Storage & Make-Ahead

I’ll be honest, because a couple of you found this out the hard way: this is not a make-ahead frosting. It’s at its best within a few hours of making it.

• Room temperature: A frosted cake is fine out for the day you’re serving it, as long as the room is cool. In a hot, humid kitchen, think a July birthday, it can soften and slide, so keep the cake somewhere cool.
• Refrigerator: You can refrigerate a frosted cake for a day if you need to, but know that the texture suffers over time and the frosting may start to weep. Fresh is genuinely better.
• Freezer: Skip it. This one doesn’t freeze well.
• Storing the frosting on its own: It doesn’t hold or re-whip like buttercream. Make it when you’re ready to frost.

What to Serve It On

This frosting shines on anything rich, because it’s so light by contrast:

• A rich, dark chocolate cake (readers’ runaway favorite)
• Angel food cake
• A simple yellow or white birthday cake
• Cupcakes, piled high
• Between the layers of a triple-layer cake — one reader doubled the recipe and had plenty

Frequently Asked Questions

Can I use powdered sugar instead of granulated? You can, but granulated is what I’d reach for. Powdered sugar makes the frosting sweeter and takes longer to break down as it cooks. Granulated gives you that clean, smooth result.

Can I make this frosting ahead of time? It’s really best made the day you’ll use it, ideally within a few hours. It doesn’t store or re-whip like buttercream.

Does a cake frosted with this need to be refrigerated? It doesn’t require refrigeration for a same-day cake kept in a cool spot. If you need to hold it a day, the fridge is okay, but the texture is best fresh. In hot or humid weather, keep the cake cool so the frosting doesn’t slide.

Why did my frosting get firm on top? That’s normal and expected — this style of frosting forms a thin, delicate crust while staying soft underneath.

Why did my frosting slide down the cake? Heat and humidity are usually the culprits. Serve it the same day, keep it cool, and for a sturdier frosting, cook the syrup to soft-ball stage (about 240°F) before beating it in.

Is it safe to eat, with the egg whites? The hot syrup gently cooks the whites as you beat it in. If you’d prefer extra assurance, use pasteurized egg whites.

Can I double it? Yes — a reader doubled it for a triple-layer cake with more than enough to go around.

What’s the difference between this and 7-minute frosting? They’re the same family. “7-minute frosting” traditionally beats everything together over a double boiler; this saucepan-and-mixer method is a simpler route to the same fluffy, marshmallowy result.