Merlyn loves yoghurt*. He cannot hear us call out to him to come in at night, but can hear a yoghurt pot opening from a mile off.
Of course, you are not really supposed to give cats dairy, even though they really love it. So what we do is just give him the yoghurt lid. About once a week, when I’ve finished my breakfast yoghurt pot, rather than scraping the yoghurt off the lid for me, I give it to Merlyn. Merlyn loves yoghurt lid day.
*which for some bizarre reason, English people call “yog-it”.