The core transformation from raw syrup to a stable gummy requires a precise sequence of steps, but not every common process is essential. At KorNutra, we focus on the essentials to ensure consistency and quality, avoiding unnecessary complexity. The minimum set of processing steps is dictated by the chemistry of gelatin and sugar, not by any particular machine.
The Essential Steps
These steps are non-negotiable for creating a stable gummy that holds its shape, texture, and shelf life:
- Ingredient Hydration and Mixing: The syrup base (glucose, sucrose, water) must be heated to dissolve solids and create a homogeneous solution. Separately, gelatin must be fully hydrated in cold water to bloom. These are combined to form a uniform slurry.
- Cooking (Syrup Concentration): The syrup is boiled to remove excess water, concentrating the sugars to a specific "Brix" level. This step is critical for setting the final gummy's firmness and preventing stickiness.
- Cooling and Tempering: After cooking, the syrup is cooled to a precise temperature (typically 80-90°C) before adding the hydrated gelatin. This prevents premature setting and ensures even distribution.
- Gelatin Incorporation and Final Mixing: The bloomed gelatin is stirred into the syrup at low shear to avoid aerating the mixture. This creates the gelling network that gives gummies their structure.
- Molding and Setting: The liquid mass is poured into starch or silicone molds. Setting occurs as the gelatin cools and forms a gel, which can take 12-24 hours in a controlled humidity environment.
- Drying and Curing: The formed gummies are dried in a low-humidity environment (often with warm air) to reach the target moisture content, typically 15-20%. This step ensures long-term stability and prevents mold growth.
Artifacts of Specific Equipment
Many steps seen in commercial production are not strictly necessary for making a stable gummy; they are adaptations to specific machinery or throughput demands:
Vacuum Processing
Using a vacuum to pull syrup immediately after cooking is a common step to remove air bubbles and reduce oxidation. However, it is an artifact of high-speed depositing equipment that can entrain air. With careful low-shear mixing and proper cooling, vacuum is not required for a stable gummy.
Starch Molding vs. Silicone Molds
The use of starch trays for molding is a traditional, high-volume method. Starch absorbs moisture from the gummy, speeding up drying. However, it is an artifact of continuous starch systems that require sophisticated handling and cleaning. Silicone molds, while slower for mass production, achieve the same stable gummy without starch dusting or drying.
Polishing and Oiling
Many gummies are polished with oil or wax to give a shiny appearance and prevent sticking. This is a cosmetic step and an artifact of packaging equipment. A stable gummy can be stored in bulk or individually wrapped without any polishing-the step adds no structural integrity.
Automated Demolding and Conveying
Robotic arms, belt conveyors, and vibratory feeders are common in industrial lines. These steps are entirely artifacts of high-speed automation. At a smaller scale, manual demolding or simple tray handling works just as well.
The Bottom Line
From a chemistry perspective, the minimum is: hydrate gelatin, cook syrup to correct Brix, combine at proper temperature, mold, set, and dry. All other steps-vacuuming, starch use, polishing, automated conveying-are conveniences driven by specific equipment choices, not by the necessity of making a stable gummy. At KorNutra, we design our processes to maximize stability and efficiency, but we never add steps that don't serve the product's core integrity.