Hi Hiroshi ,
Thank you for your comment.
And apologies for my very late reply. I hope my reply might still be useful for you or others.
I personally haven’t used canned kumara yet. I imagine it should work.
You might want to add something to bind it better though. For example psyllium fiber husk or some flour, like rice flour.
All the best and warm regards
Jana

Do you think I can use canned/tinned kumara puree for this? If so, would I use 400g?

Thank you,
Hiroshi