Good tip Jonah.
I had some left over from last September and have added a birthday gift of some from my brother who is currently there (raining in Dubrovnik by the way, but the long term forecast is a lot better 🙂 ).
I always order from Tesco and have been this morning to order a few more. I can't get them until Friday, but she didn't mention anything about a shortage.
Have a great trip. Look out for the reviews when we get back.