Marshmallow Sauce
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About 5 cups Wonderful on a hot fudge sundae or chocolate cake.
Let's Prepare
Collect
Gather these ingredients - no prep needed yet.
- ⅓ cup water
- ⅔ cup sugar
- 20 large marshmallows
- 1 teaspoon vanilla
- 3 tablespoons water
- ¼ teaspoon cream of tartar
- 3 large egg whites
- ⅓ cup sugar
Let's Cook
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Step 1.
Combine in a medium heavy saucepan: ⅓ cup water; ⅔ cup sugar
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Step 2.
Stirring, bring to a rolling boil. Remove from the heat and immediately add: 20 large marshmallows
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Step 3.
Stir gently until the marshmallows are melted. Stir in: 1 teaspoon vanilla
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Step 4.
Cover and set aside. Proceed at once to make a water bath: Heat 1 inch of water in a large skillet over very low heat until it reaches 155° to 160°F and keep at this temperature. Combine in a heatproof bowl or the bowl of a stand mixer, stirring to dissolve the cream of tartar: 3 tablespoons water; ¼ teaspoon cream of tartar
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Step 5.
Whisk in thoroughly: 3 large egg whites; ⅓ cup sugar
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Step 6.
Set the bowl in the water bath and, whisking frequently, heat the mixture to 140°F. Whisk gently to maintain the mixture between 140° and 155°F for 5 minutes, moving the sauce off and on the heat as needed to maintain the temperature. Remove the bowl from the water bath and beat the egg white mixture on high speed (with the whisk if using a stand mixer) until the bottom of the bowl no longer feels warm, 4 to 8 minutes. Add the marshmallow mixture and beat for 30 seconds more. Use at once, or cool and cover tightly and refrigerate for up to 2 weeks.