Complex sentence: The liquid is cooled and then strained to remove the "katsuobushi" flakes and the juice of one or more of the following: yuzu, sudachi, daidai, and kabosu (Japanese citrus fruits), and sometimes also lemon, is added.
Split into simpler sentences: The liquid is cooled and strained to remove the "katsuobushi" flakes. Finally, the juice of one or more of the following: yuzu, sudachi, daidai, and kabosu (Japanese citrus fruits), and sometimes also lemon, is added.