What is the science behind making jelly beans?

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The creation of jellybeans is quite an intriguing process, blending culinary skills with an appreciation for art and science. Let's dive deep into it.



Preparation of the Jelly Center
Jelly beans start their journey with the creation of the candy’s jelly center. The recipe is deceptively simple, requiring little more than sugar, corn starch, and corn syrup. However, the process of cooking them together is a precise science. These ingredients must be heated to soften-crack stage, approximately 250 to 270 degrees Fahrenheit. This stage ensures the jelly center's texture is not too hard or too soft.
The Starch Molding Process
Post cooking, the mixture is poured into starch molds to give the candies their signature bean shape. This process is known as the starch molding process. The jelly mixture is deposited into the molds in a giant tray of corn starch. The cornstarch draws moisture away from the candy, setting it into the intended shape.
Creating the Candy Shell
After the jelly mixture has hardened in the molds, our candy friends are not quite beans yet. The next step is to give them their distinctive hard outer shell. This is achieved through a process known as panning. In panning, the centers are tumbled in large, rotating, copper kettles while sugar, hot syrup, and artificial flavors are gradually added. The shell development is a gradual process as thin layers of sugar accumulate over time, forming a shell.
Control over temperature and humidity is critical during this step, as sugar crystallization needs to be monitored carefully. This is where the science of candy making really shines – the process of sugar turning from a grainy solid to a glossy liquid and back into a solid, but with a completely different texture.
Coloring and Polishing
Once the candy shell is complete, it's time to add color. The beans are sprayed with confectioner's glaze, then food coloring is added to give them their vibrant appearance. Finally, to give the jelly beans their trademark gloss, they are polished with a mixture of beeswax and shellac.
Curing
The last step in the jelly bean’s journey is a rest period of about a week for curing. This allows the moisture content of the jellybean to balance out, with the moisture from the jelly center seeping out to the relatively dry shell, creating the perfect chewy texture we all enjoy.
In conclusion, making jelly beans is a scientific art marrying precise cooking, smart chemistry and meticulous craftsmanship. Their vibrant colors, sweet crunch outside, and soft chewy center make them a favorite treat worldwide. Behind every small, glossy, sweet piece of candy is a complex process of transformation, waiting to be savored delightfully.