A shell coating system in snacks involves creating a flavorful, crispy outer layer on various food items like nuts, popcorn, and chips. This process typically uses techniques such as spraying or tumbling to evenly distribute seasonings, cheeses, or sweet coatings. The coating enhances the snack’s taste, texture, and visual appeal, making it more enticing to consumers. Additionally, the shell helps retain freshness and can extend shelf life, contributing to a better overall snacking experience. This innovative approach has become popular for adding variety and indulgence to everyday snacks.