“You don’t spit with a metal spatula or a wet towel on it,” she says in her video. The bars are “spitballs” made of food grade plastic and silicone that you “squeeze like a spoon or a big finger,” she says, before “popping them.”
This process works because the spatula/spray is heated, and the “spitballs” get cooked and release the trapped gases from the plastic. When she puts the bars over a water bath for two minutes, she gets a brown crust, similar to baking a pie.
When can you make these things at home?
The video makes it sound like it won’t take you more than six tries. But there’s a reason she says it takes up to four.
If you’re trying to make a “wet sponge,” the best way to prepare it is to use a wet sponge. The recipe uses a water bath to cook the sponges, and they’re meant to be dipped in your baking soda or bicarbonate of soda as you sprinkle on the melted butter. But if you’re using a “dry sponge,” first boil the sponge (and make sure she doesn’t use a regular cup). After one minute, pour your baking soda and bicarbonate of soda onto the sponge in a circle, and put the pan in the microwave.
Then add the sugar, one tablespoon at a time.
What if I’m still unsatisfied?
It turns out, it’s actually easier to make a wet sponge than to make a dry one, says Ms. D’Agostino — especially for larger batches.
With a wet sponge, Ms. D’Agostino points out that you have to be careful not to crowd the cooking chamber (you’re not supposed to use the same spatula over and over, like you do a normal pancake).
She says that by using a small amount of syrup, you can keep things from being too spongy. As for the temperature, it’s crucial not to go over 200 degrees, because your batter won’t have time to cook evenly.
A word of caution
The video is very simple, but the process is not so simple. First, you have to wash the spatula so you know how it works correctly.
Then, you have to heat it first, so that all the air bubbles will be trapped, and the heated food will heat up
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