At less than 10p each, catering piping bags are essentially disposable items, and can of course be used for storing unused kebab mix in the 'fridge until needed

No problem at all with a disposable. Anything that needs cleaning and re-use in a home kitchen environment needs to be carefully considered.

Yes he has Phil, Great minds and all that, that said catering piping bags for your reasons given is the way to go.

I can now report that extruding chilled kebab mix from a piping bag is considerably more difficult than extruding freshly made

How about a plastic funnel inside the bag to stiffen the bag then use your fist to force it through

Quote from: Peripatetic Phil on October 17, 2020, 07:25 PM
I can now report that extruding chilled kebab mix from a piping bag is considerably more difficult than extruding freshly made ... Not sure how to resolve this ...

How about extruding when fresh and then chilling the resultant kebabs? Or is that too logical?

Far too logical, Santa