Yes, it's ingest-able.
Was it one of the sandwiches Eustace and Jill brought King Tirian when they were propelled into Narnia?
No.
Does it occur in The Voyage of the Dawn Treader?
Yes
Did Shasta eat it in the lodgings of the Narnians when he was mistaken as a Prince Corin in Tashbaan?
No.
Aaaaaand, I just realized that for the past couple questions, I was thinking of my answer for the Narnian 20 questions. 😳 My bad.
So, for review:
1. It is inanimate.
2. Most people own one.
3. It is not an appliance.
4. It may be found in the kitchen, but not because it's a kitchen item.
5. It does appear in Narnia.
6. There is one in a book Eustace stars in.
7. Despite my earlier answer, it is not for eating.
is it sharp?
He does all things well.
Is it a flashlight?
No, it is not sharp.
No, it is not a flashlight.
Was it made/crafted (as opposed to occurring naturally)?
If so was it made in Narnia?
Is it a key? I'm thinking of the one Peter has in the Last Battle.
Jesus answered, "I am the way and the truth and the life. No one comes to the Father except through Me. If you really knew Me, you would know My Father as well." - John 14:6-7a
It is made/crafted.
However, it's not exclusive to the world of Narnia.
No, it's not a key.
Is it made of metal?
Is it a container of some kind?
No and no.