Complex sentence: Korean cuisine uses green leaves of the oilseed variety, which have a flavor different from "shiso", and also uses the perilla seeds, known as "wild sesame", a source of perilla oil rich in ALA omega-3 fatty acids.
Split into simpler sentences: Korean cuisine uses green leaves of the oilseed variety, which have a flavor different from "shiso". It also uses the perilla seeds, known as "wild sesame", a source of perilla oil rich in ALA omega-3 fatty acids.