Frozen concentrated pure orange juice?

I used to get this in Sainsbury's and the last few times I asked, the staff either never heard of it, said they hadn't seen it for twenty years or were looking for it themselves but I still found it in the freezer section albeit with difficulty.

I can't be sure when I last managed to find some but I seem to recall getting the last three ‘cans’ that Sainsbury's had left. It was probably five or six years ago, possibly a bit more. We use it in an Orange Tarragon Chicken recipe which we typically have annually on my wife's birthday (today!).

I haven't been looking for the past few years but I recently found a very old ‘can’ in our deep freeze and I'm debating whether it's safe to use! I'll continue to research online but it's a difficult item to search for (too many unrelated hits). I'll report back if I'm successful.