The reason why Jello was so popular is because Jello is very convenient and affordable and easy to make.
Jello allows you to easily create visually appealing desserts and even salads with little effort which was also great during the Great Depression when it was crucial that you stretched ingredients.
Jello was also an easy and cheap addition to other labor intensive or expensive recipes during World War II and the Great Depression.
The release of lime flavored Jell O during the Great Depression also heightened Jellos popularity.
Jell-O was first trademarked in 1897 and began it's rise in popularity with the introduction in 1904 of the prophetic slogan of "America's Most Famous Dessert."
Hospitals also serve Jello because Jello is easy to digest and swallow.
Because Jello is easy to digest and swallow it makes the Jello great for patients that have difficulty in eating solid foods and for patients that are recovering from surgery.
Jello has a smooth texture and a mild flavor and is often well tolerated by people who even have sensitive stomachs.
Jello is also high in water content which makes the Jello hydrating as well.
The Jellos Gelatin is also easily broken down by the body and makes it a great food option for people with digestive issues.
And Jello is mostly water which also helps to keep you hydrated and especially for people that may not be able to drink large amounts of fluids.
Jello also has a simple flavor and is less likely to trigger nausea in people when compared to foods that are stronger.
Jellos smooth texture and consistency makes it easy to swallow, especially if you have difficulty chewing and swallowing.
Even when you're sick with the flu or a cold or other illness the Jello is a good food option to provide you with hydration and help you recover faster.