What is inside jello?

Jello or jelly is made from gelatin, a protein obtained by boiling the skin, tendons, ligaments and/or bones with water. It is usually paired with sugar, water and flavourings, as well as an acid, such as lemon juice or cream of tartar. Then, it is boiled and refrigerated to set.

Gelatin is a flavourless, odourless and colourless substance. It is a pure protein, meaning it contains no carbohydrates or fats. It is however, low in calories, with only about 50 calories per serving.

Gelatin has a number of properties that make it useful in food production. It is a gelling agent, meaning it can cause liquids to set into a gel. It also stabilises emulsions, meaning it can prevent oil and water from separating. It is also a thickening agent, meaning it can increase the viscosity of liquids.