It went... poorly.
Not only did she not like it, she refused to eat *anything* that came on a spoon for days afterwards.
Yesterday I heated some leftover mustard soup for lunch for Bob and I. She wanted some, so I let her lick the spoon. She demanded her own bowl. When it was gone, she regretted the lack of seconds. When I reheated the last of it today, she had a big bowl, and sucked it all down.