I've loved Calpico/Calpis mixed with milk since I was a kid. This pudding contains whey from drained yoghurt and is set with gelatin
I had some whey from drained yoghurt, so I made an easy-to-eat jelly for my daughter using Calpico and milk, which I loved as a child.
I made this as a children's snack, so it's on the sweet side. It might be fine without the honey.
Enjoy Japanese food around the world.