where does gelatin come from

Gelatin is a protein derived from collagen, typically obtained by processing animal connective tissues. The most common sources are pig skin and cow hides, but it can also be produced from demineralized bones and, in some cases, from parts like fish skin or chicken connective tissue to meet certain dietary or cultural preferences. The general process involves breaking down collagen through controlled heating and hydrolysis to produce a water-soluble protein that forms gels when cooled. [sources: general gelatin production knowledge] If you’d like, I can tailor this explanation to a specific use (food, pharmaceuticals, or cosmetics) or discuss kosher/halal or vegan alternatives.