This is my mom's recipe for peanut brittle. It is a hit with everyone in the family and so easy.
This is my mom's recipe for peanut brittle. It is a hit with everyone in the family and so easy.
Baking soda does the heaviest chemical lifting in this confection by reacting with residual acids in the corn syrup and sugar mixture to release carbon dioxide gas. Trapping these microscopic gas bubbles transforms a dense, hard sugar sheet into a porous, brittle matrix that shatters easily between the teeth. Sugar molecules undergo thermal inversion during the sequential microwave heating intervals, breaking sucrose down into glucose and fructose to prevent unwanted crystallization.
Traditional candy making requires a candy thermometer to monitor exact sugar stages, but microwave cooking relies strictly on timing and visual cues like color darkening. Preheating the cookie sheet in an oven keeps the molten sugar fluid longer upon pouring, allowing gravity and manual stretching to create a thin sheet. Adding the baking soda at the final stage demands immediate stirring because the foaming reaction begins instantly upon contact with residual heat.
Popcorn makes a viable alternative base if poured directly over popped kernels cleared of unpopped hulls.