I've used the Jetboil canister holder on a couple of long trips and it's holding up fine, and a boon in terms of improved stability.

Jaya John

Jetboil stove, 250grm cylinder lasts
a comfortable 10 14days with a cosi.
for 4 to 6 brews each day plus supper.
Breakfast is muesli and tea. Cheers.
I don't go for 100grm cans Weight for
gas is not good. Cheers.

last a year i started with a 100g ( and a gnat stove + evernew 550 pot used both as a pot and as a mug )

i bought a new 100g canister in Braemar but it was only for safety and turned to not being needed


but i had 3 evenings meals and 2 breakfast without boiling water
and i dont cook , just tea , cafe , soup, dehydrated meals
no porridge at all !!!

if you want to be sure easiest way, ( will spend a canister )
take a new one,
weight it,
burn it to ( if a 100g )-25g /-50g /-75g / empty on your scale.
each time put it to float in water and draw a line
you can reproduce this on a new canister and have an easy way to check precisely whats left in during the challenge.
( unless its way under 0°C and you dont burn the gaz melange evenly...)