Summary
Despite being edible and (unlike potions or milk) having food components, Ominous Bottle is not required for the advancement A Balanced Diet.

Steps to Reproduce

1. Create a new world with update 1.20 experiment.
2. Eat an ominous bottle.

Expected Result
A Balanced Diet's progress becomes 1 out of 41.

Actual Result
A Balanced Diet does not progress.