Tractor-trailer and 18-wheeler both refer to the combination of a semi-truck and semi-trailer. Together, they form a tractor-trailer unit, also referred to as an 18-wheeler, owing to the number of wheels present on the unit as a whole.
Quick Answer. Many different types of foods contain gelatin, including peanuts, marshmallows, Jell-O, yogurt, gummy candies and some sour cream brands, among other foods. The best way to determine if a food contains gelatin is to read the product's label. Continue Reading.
Gelatin (sometimes gelatine) is a common gelling agent and thickener that most people are familiar with. It is flavorless, colorless and brittle when dry. In it's pure form, gelatin comes either as gelatin sheets, or as powder. Generally, it is made from animal bones and collagen, the most common source being pig skin.