I recently made a dining table and funed it with household ammonia. I was very pleased. Put it in a tent and used several pans of ammonia.
While doing that I put some ammonia on a scrap. It darkening it darker and much quicker than the fumes. My back up plan was to slather it on the table if the fuming did not suit me, but the fuming worked out.
I would play with a scrap first. Don't want the bowl to look like a rotten banana.