there is a very high chance that anything you care to name is not available to me.

I can sort you out a load of weird fruits nobody has heard of, some chicken arsehöles and feet if you want to do swapsies?

Where are you, Brrrrap? I have a feeling you would be able to source durian-based desserts.

Avocado oil for cooking. Totally disappeared.

heh.  Durian. the signs on buses here have pictures of what is not allowed to be carried on.  These include pictures of durian, hand grenades and guns.

I'm in SEA (as if I don't bang on about it enough).

acquired quite a taste for certain varieties of durian but tended to make my face red when I drank, so assumed it was using up valuable liver enzymes to gave it up before the booze.

Capon

brrrap - remember to beware of star fruit!

Bittern 

At the moment, potato flour/starch. But that’s not v ordinary, I guess.

Clothes. I think all there is left is a Peacocks. 

There's some outdoor gear shops, but obviously that's a niche market.

fresh fish - no fishmongers in my town and supermarket selection generally crap.

Shoes