On my recent several long-haul CX business flights I encountered different responses as far as mid-flight snack was involved.

For example, on CX-100 there was noodle soup available as a snack and I must add that it tasted really great. On the other hand on CX-111 there were only nuts for a snack which was really disappointing. So, what determines the type of a snack that any certain flight gets? Since CX-100 and CX-111 are exactly on the same route then it makes me wonder why one has decent food while the other has something resembling coach product?

I believe the 'nut snacks' you were referring to was accompanied with drinks. That is not considered as a snack meal. Every flight over 40 minutes that CX operates, CX offers 'refreshments' in all classes. If you don't see it on the menu, ASK. There are usually noodles and cookies offered especially for flights as those you took to/from HKG and Australia.

I think CX offers snacks, such as cup noodles and sandwiches, only on the long haul flights, which were above 10 hours.

Since HKG to SYD is about eight hours southbound, and nine hours northbound, snacks are not always offered.

With my knowledge of CX catering, CX 111 departs early at 7pm, with a full dinner service (5 course) after takeoff, and CX 101, which departs at 11pm, will have only a supper service (3 course), which is a much modified dinner service.

On the supper flights, CX makes the meal services a bit more flexible, so if the passengers fall asleep after takeoff and during the supper service, it still has access to some kinds of food if they wake up mid flight. I hope this explanation makes sense to you.

Carfield

Actually, these nuts were the ones on a tray in the galley. And I asked the FA if there was any other food available but she told me that there wasn't anything else apart from the nuts. No cookies either! Also, on CX100 noodles were on the menu as snack while on CX111 they weren't.

I wouldn't be asking but next time I would like to get flights where I can get some mid-flight snacks since on CX111 I got only 3 (yes three!) prawns for dinner with rice and veggies and due to the tight connection at HKG I had no time for some noodles at the Wing, so I was feeling a tiny bit pekish.