Two numbers do all the work: 240°F for the syrup, and ten full minutes of whipping. Under-boiled syrup gives marshmallows that never set; under-whipping gives dense ones. A thermometer is genuinely required here — this is not a recipe you can judge by eye.
The ratio1½ cups sugar + ½ cup water + ½ cup corn syrup to 240°F, whipped into 3 tbsp bloomed gelatin. 10 min.
By Vince Gonzalez · Published July 2026 · Sourcing verified 5 Jul 2026
Equal parts, for dusting the tin and the cut edges.
½ cup each
Local / market
The Rundown
Greedometer●●●●●A fair little treat
A reasonable little indulgence.
EffortA project
Cook it with
Oven
The Method
Bloom the gelatinSprinkled over cold water in the mixer bowl, left ten minutes until spongy. Dumping it in dry gives lumps.
Boil the syrup to 240°FSugar, water and corn syrup, undisturbed once boiling. Use a thermometer — 240°F exactly, the soft-ball stage.
Stream it into the gelatinMixer on low, syrup down the side of the bowl in a thin stream. Pouring onto the whisk throws molten sugar around.
Whip ten full minutesUp to high. It goes from amber liquid to thick, white and glossy, roughly tripling. It should hold a ribbon. Ten minutes feels long and is right.
Spread fastInto a dusted tin with an oiled spatula. It sets as it cools and gets unmanageable quickly.
Set four hours, then cutUncovered at room temperature. Cut with an oiled knife or pizza wheel and toss every cut face in the starch-sugar mix.
Make it yoursToasted coconut. Peppermint. Coffee. Swirl in caramel sauce before setting. Cut into cubes for hot chocolate or use in s'mores.
Can you make How to Make Marshmallows in an air fryer? — Sometimes
Sometimes — if the pieces are small and cooked dry, an air fryer can handle it in a single layer; anything saucy or liquid needs a pan. When in doubt, the stovetop or oven is the safe call.
Can you freeze How to Make Marshmallows? — Not ideal
Not really — the cream, custard, or emulsion turns grainy or splits once thawed. This one is best kept fresh in the fridge.
Can you make How to Make Marshmallows ahead of time? — Partly
The components hold — prep the parts ahead and finish it close to serving for the best texture.
Is How to Make Marshmallows gluten-free? — Yes
Yes — nothing in this recipe as written contains gluten. As always, glance at the labels on any packaged items (broth, sauces, chocolate), since brands vary.
Is How to Make Marshmallows vegan? — No
No — it contains meat, so it isn’t vegetarian or vegan.
Community Notes
Cooked it? Changed something that worked? Leave a note for the next person — first-name basis, no account.
Open data. Every maker on this site is published as a free dataset under CC BY 4.0 — use it in anything, commercial or not, as long as you credit 5best2buy. Browse the datasets →