1cupCalifornia pistachios,raw, shelled, and unsalted
1tablespoonsalted butter
1teaspooncoarse kosher salt
¾teaspoonbaking soda
Chile-flecked flaky sea salt or another flaky salt for garnishing
Instructions
Prepare a baking sheet by lining it with parchment paper or a silicone mat. Spray with non-stick spray or brush with oil or butter. Set it aside.
In a medium saucepan, combine the sugar, corn syrup, and water. Stir together over medium heat. Put a candy thermometer into the saucepan. Continue stirring and bring the mixture to a boil. Cook it until it reaches 290°F (140°C).
Add pistachios, butter, and salt to the pan. Stir everything together. At first, the mixture might become stiff, but it will loosen up again. Keep cooking until the caramel turns a pale amber brown (about 300°F/150°C) and the nuts have a toasty smell.
Remove from heat and quickly stir in the baking soda (it will bubble up a bit).
Immediately pour the brittle onto the prepared baking sheet. Use an offset spatula or a heatproof rubber spatula greased with a little cooking spray or butter to spread it out as thinly as possible.
Sprinkle the chile-flecked flaky sea salt to your liking on top of the caramel. Let it cool completely.
Once cool, break the brittle into pieces. Store the pieces in an airtight container at room temperature.