Recently flew from London to Israel with family including DS2, aged 11 months....
Around an hour into the flight this woman starts making a fuss. It turns out she got on the plane late, and there wasn't space for her hand luggage in the overhead locker so it had to go in the hold.... she had an 8 week old baby and the formula and bottles were in the hold. Its a 4 hour flight and the baby was already crying.
I obviously felt dreadful for her and was able to offer her a sealed carton of aptamil (suitable from birth etc) as I had bought 3 in the airport, and DS2 would only drink one on the flight.
But no, she didn't want it was it wasn't kosher enough (aptamil is listed as kosher on the London beth din list, but this woman was ultra orthodox so would only want milk that was fully supervised... although all Rabbis even ultra orthodox ones are lenient when it comes to children under 3, even more so when they are babies, even more so in an emergency...)
Anyway she was making huge fuss, demanding air steward got her bag from hold or could otherwise magic up some super kosher formula.
This went on for ages (an hour... meanwhile the baby was still crying).... Air steward less sympathetic by now (due to my offer of formula). And totally confused about how it could be kosher but not kosher enough.
The mad thing was that it turned out that she was a breastfeeding mother who had brought formula as she hadn't wanted to feed on the plane (I think for modesty reasons but it wasn't really clear as her english wasn't fluent)... the woman behind me who told me this also said that she had brought babyrice to add to the bottle so the baby would sleep better in the flight...
Eventually thought (maybe after 2 hours) she realised the plane wasn't going to do emergency landing on her behalf and so she breastfed her baby.....