Serves 8-10
Every year I
have the opportunity to play Mr. Wizard at work on “Take Your Children to Work
Day”. This year I made Liquid Nitrogen gelato for the kids and they loved both
the show and the taste of the gelato. I had fun at the same time J If you have access to liquid nitrogen
and you know how to safely handle it this is a great dessert for a party—if not
just use your ice cream maker.
Having fun with molecular gastronomy |
4 C Whole Milk
1 Vanilla Bean (split)
1 C Sugar
3 TBS plus 2 tsp Cornstarch
1 tsp Vanilla Extract
1 Vanilla Bean (split)
1 C Sugar
3 TBS plus 2 tsp Cornstarch
1 tsp Vanilla Extract
1 C Fig Preserve
1 C Almond Slices
(toasted)
Preheat your oven to 350 degrees F. Spread
the almonds in a single layer on an ungreased shallow baking pan. Bake for 10
to 15 minutes, stirring occasionally, until golden. Start watching it at 10
minutes to make sure they do not burn. Place them on a plate in the
refrigerator to cool.
Heat 3 cups of milk with the split vanilla
bean in a saucepan over medium heat.
In a medium bowl whisk the remaining 1 C
of whole milk with the sugar and cornstarch until incorporated.
When the milk comes to a simmer (small
bubbles around the edge of the pot) take it off the heat and add the cornstarch
mixture, stirring continuously until well mixed. Return the saucepan to
medium-low and keep stirring until it starts to thicken. This will take 10 to
12 minutes—do not walk away. You must stir continuously or the milk will burn.
It will end up the thickness of gravy and should coat the back of a spoon.
Pour the mixture through a strainer into a
mixing bowl, whisk in the vanilla extract, and cool on the counter for 20
minutes. Place the gelato mixture in a sealed container for 2-12 hours in the
refrigerator.
At this point you can put the gelato base
into an ice cream maker using the manufacturer's instructions or you can get adventurous
and make Liquid Nitrogen (LN) gelato. If you decide to go the LN route, safety
is top priority. Liquid nitrogen splashed or poured on the skin will instantly
freeze anything it touches. Use extreme caution. Here are some sites you should
check out before proceeding.
Material Safety Data Sheet for Liquid Nitrogen
Mark Powell's Food Hacking site
Molecular Gastronomy Wikipedia
If you are using liquid nitrogen to make
your gelato, put on your face shield and cryo gloves. Place the gelato mixture
into the metal bowl (do not use a glass bowl) of an electric mixer. Turn the
mixer to medium-low and slowly add the liquid nitrogen a little at a time. Keep
adding the LN until the gelato mixture looks semi-hard.
Put 1 cup of fig jam into a bowl and mix
up so that it loosens. Slowly fold in the fig jam and the toasted almonds into
the gelato.
You can serve it immediately as a soft
serve or you can place in a closed container in the freezer until completely
set (about 2-4 hours).
To
print this recipe, go to Fig
& Toasted Almond Liquid Nitrogen Gelato