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Crispy rice is a processed grain used in breakfast cereals and desserts. It is made by introducing moisture into rice grains and then rapidly expanding them through frying, baking, or gun puffing. The resulting product is used in various recipes, including snack bars and candy bars.
Crispy rice is a processed rice product. Typically, manufacturers sell it as a breakfast cereal or add it to desserts, such as candy bars or rice crispy bars. There are a few ways to process rice grains, including a process called gun puffing. Gun puffing produces a softer, fluffier product than cooking or frying prepared rice grains. Most people buy rice cereal with chips to use as cereal or in cooking, but there are recipes available for homemade rice with chips.
Making rice crispy is similar to making popcorn from corn kernels or making puffed corn. Starchy kernels pop or swell when the moisture inside heats up quickly. Popcorn naturally has a high moisture content, which makes the process easier. Rice is a much drier grain; therefore, the first step to making crispy rice is to introduce moisture into the rice grains.
Generally, commercial food processors increase the moisture content of the rice by steaming the grains. Recipes for home cooks often suggest cooking the rice and then drying it in a medium-hot oven. Baking dries the surface of the rice leaving the internal moisture intact. The high heat introduction of the moisture laden rice grains creates the popping process.
Home cooks usually fry prepared rice in hot oil to bring about the sudden and drastic temperature change needed to rapidly expand trapped moisture and enact the puffing process. Commercial food companies use hot oil or hot ovens. Another process, called gun puffing, creates a softer puffed rice product. Food processors accomplish this by pressurizing the moisture-laden rice grains and then rapidly releasing the pressure, which blows the grain.
One of the attractions of crispy rice is the noise it makes when dipped in liquid. It reacts, making a popping or popping noise. It is a complex process, as the dried and weathered grains of starch increase shrank unevenly in the drying or puffing process. The uneven surfaces create stress within the piece of rice. As the liquid rehydrates it quickly, it creates more stress and makes a popping noise.
Food manufacturers and home cooks use crispy rice in recipes. One of the most popular foods is breakfast cereal. Many candy makers add rice crispy into candy bars to add a crunchy, light texture to the chocolate. One of the most popular home recipes creates a snack bar using rice, a marshmallow product or corn syrup and butter or oleomargarine. This recipe is popular because the limited amount of liquid and the coating from the marshmallow or corn syrup preserves the crunchy texture of the crispy rice.
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