"It's a natural oil. Simmering it in soup makes it exceptionally savory and whets the appetite."
"Oil?"
An Jin was using so many new terms that Xi was completely baffled. His blue eyes were filled with confusion. "What is oil?"
'How should I explain this?'
'I can't very well tell him it's biological fat.'
Xi's curiosity was piqued, and he was determined to get to the bottom of it. An Jin racked her brain for a moment before managing an explanation. "There are many kinds of oil. The one I was talking about is common cooking oil. It looks like golden water, but it's more viscous. Not only is it not water, but it's also insoluble in it…"
"If it lands on the surface of the water, it will float there without mixing. The surface of the oil will even reflect many different colors when the light hits it…"
Xi's heart skipped a beat, and he said with pleasant surprise, "I think I've seen that before."
?!?!
