A/N: I got this idea when I saw a bottle of Watkins vanilla on our table and thought it was alcohol.
Killian Jones loved rum. If he saw some sitting around he'd take it, being the pirate he was. So when he was visiting Swan at Snow White's apartment and saw what he thought to be rum on the table he wanted to drink it. It was a little brown bottle with a label he didn't bother to read. What else would you keep in the kitchen in a brown bottle besides alcohol? He took a swig and then coughed. Well that was an interesting flavor.
Swan entered the kitchen and gasped. Then a smile grew on her face as she watched Hook take another swig. He made a face and then turned to her with a smile.
"What type of rum is this? It taste odd, love." He asked.
"Not rum, Killian." Emma laughed, "That is vanilla extract. We use it for cooking."
He looked at the bottle and read the label. He took one more swig and shrugged. "Not bad in that case."