01 -
Keep your marshmallows fresh in a sealed box on the counter. They'll be good for about a week.
02 -
Mix cornstarch with powdered sugar in a little bowl. Spread some on your table. Pop out the marshmallow slab, junk the parchment, and dust the top. Cut into fun bits with a greased blade or cookie cutter, roll them around in the sugar mix until they're all covered.
03 -
Push the fluffy mix into your lined pan and even the top with an oily spatula. Let everything hang out on the counter for at least 6 hours or overnight—just so it's firm.
04 -
Slowly run your mixer and drizzle the hot syrup into the bloomed gelatin. Crank the speed up and beat for 10 to 12 minutes until it gets thick, cool, and big. Drop in the cotton candy flavor and food coloring—mix till smooth.
05 -
In a regular pot, put in sugar, corn syrup, salt, and the last bit of water. Warm it up on medium, stirring to melt all the sugar first. Turn up the heat and boil until you hit 240°F—check with a candy thermometer.
06 -
Toss the gelatin into your mixer bowl with 1/2 cup cold water. Let it sit there and get spongy for about 5 minutes.
07 -
Cover a 9-inch square pan with parchment, then spray or oil it lightly so nothing sticks.