Bromelain is a mixture of enzymes derived from pineapples (Ananas comosus). It's primarily composed of proteolytic enzymes, which means it has the ability to break down proteins into smaller peptides and amino acids. Bromelain is typically extracted from the stem and core of the pineapple plant, although it can also be found in lower concentrations in the fruit itself. Bromelain has a long history of traditional use as a meat tenderizer and digestive aid in various cultures. It's also widely used as a dietary supplement and natural remedy for various health purposes due to its potential therapeutic properties.