Knowledge: Strawberries are available during summer and it is impossible to find during winter but many people do not know. In addition, the color is red because of anthocyanins.

Conversation:
My favorite color is red.
Oh, Okay. Were you aware red is at one end of the spectrum of visible light?
Yes. I like how it's bold and solid. I also like blue, though.
Ah, that one lies between green and violet.
I see, I like red cause it is the color of blood.
Say, did you know that blood is red because of hemoglobin? Apples are red because of something called anthocyanins.
I did not know that. How about strawberries?

Response: Ah, that is also because of anthocyanins.