Disclaimer: If you are easily disgusted, or are my sister, do not read on.
When I was around 5 and my sister was around 3, she was sick at Christmas time. I wanted to offer her something she enjoyed as a comfort, and at the time, she LOVED egg nog.
So, I put some egg nog in a sippy cup and gave it to her.
She drank it.
She has not drank egg nog again to this day.