Puffed Rice SnackBbeongtwigi

Bbeongtwigi is the sound the machine makes — a loud pop followed by a whoosh as a metal cylinder of rice or grains gets pressurized and then rapidly released. Street vendors with these machines would park near schools and markets, load rice into the cylinder, heat and pressurize it, then suddenly open the seal with a bang that could be heard from a block away. The explosion of steam and grain came out as puffed rice.

I was afraid of the machine as a child. The bang was too loud and too sudden, even when you knew it was coming. My grandmother found this funny. She would buy the puffed rice in large flat discs, still warm, held together with a coating of sugar syrup, and we would break pieces off and eat them while sitting at the market.

Bbeongtwigi discs are essentially the same thing as rice crispy treats, made by a different route: commercial puffed rice instead of the machine-popped variety, bound with caramelized sugar and corn syrup instead of marshmallow. The Korean version is slightly drier and more brittle, with a purer rice flavor because there is no marshmallow.

At home, work quickly once the puffed rice hits the caramel. The caramel starts setting immediately when it comes into contact with the cooler rice, and you have about sixty seconds to fold everything together before it becomes too stiff to press. Use a silicone spatula and press the mixture firmly into a greased baking sheet or mold while it's still pliable.

The salt is a small detail that matters — a quarter teaspoon in a sweet snack this size sharpens the caramel flavor and prevents it from tasting cloying.