ATTENTION: If you are lucky enough to find this jar in your local grocery or specialty store, get it!!
This is a jar of yuzu tea mix. It looks a little like runny marmalade, but you don't spread it on toast. No, you mix a few teaspoonfuls into a glass of ice water, or soda water, or hot water, and make iced yuzu tea, yuzu soda, or hot yuzu tea, respectively. It's that easy. My favorite way to have it is in iced tea form. During these hot summer days, this stuff is heaven.
I first had iced yuzu tea at a Korean restaurant in Japan on a hot day. I had never even heard of it before, even on previous trips to Japan, and I was sad when I finished because I didn't know where to get it. But then I did a little internet research recently, and discovered it comes in huge jars like that. And lo and behold, one of the Asian markets in my city carries it!
I'm trying to not use the entire jar today. But, no guaruntees.