A Glass of Water, Please. Hold the Apostrophes.

I love when my Twitter friends patrol for punctuation goofs. Just this morning @camillasia called my attention to this photo:

@snarkygrammar Found this #apostrophecatastrophe while out to dinner

Where does this label go wrong? It uses an apostrophe to form a plural word.

Quick rules:

• To turn a singular word into a plural word, just add 's' or 'es' with no apostrophe. I like peppers. Halloween is a great holiday for witches.

Correction:  

• Various Chilis