Ground beef already formed into patties or separated into smaller quantities take less time and defrost quicker. For instance, 1/2-inch (1.25-cm) ground beef patties that were frozen separately usually take about 10 hours to defrost.
Gelatin is a protein substance used to thicken liquids. It does not have a color, smell, or taste. It comes from boiling animal tissues such as beef bones, cartilage, tendons, and pig skin. Gelatin is used in many kinds of food products and drug and supplement products.
The most common case of dead animal odor is a rodent such as a mouse or a rat dead by a poison bait. If the death occurs and it takes place in the attic - wall void or inaccessible crawl space - the animal will smell and in most cases the scent will last for several weeks.