Berry was supposed to be studying for her big chemistry exam, when she came up with this riddle instead and just had to post it:
I am extinct, yet pretty much everybody knows what I am like.
Despite what my name sounds like, I am not disgusting at all.
My sister took my place in the spotlight, but nobody thinks she is as sweet as I am to people.
You can still see me in the frozen aisle of most grocery stores.
On the periodic table, I am considered to be three metals that do not fit perfectly together.
(The first sentence may or may not apply to me right now... :P )
The first sentence holds an important clue (especially the bold word).
The bold word relates to the category that the "thing" is in.
You might find the answer quite "appealing".