What is allowed in kosher?

Kosher refers to dietary laws observed in Judaism, which dictate what foods are permissible. Animals must be healthy, properly slaughtered, and chewed; only species that chew their cud and have split hooves, like cows and sheep, are allowed. Seafood must have fins and scales, while birds must be from a specific list of permitted species. Additionally, meat and dairy cannot be mixed or consumed together.