Can you guess?

This happened completely by chance today when I was chopping vegetables- can you guess what it is?

This week has been very busy which is why I have missed a couple of days. I have been working hard and getting an hour or so of studying done in the evening in between sorting the kids at their clubs etc but the weekend is nearly here.

Okay so this vegetable is the bottom of a park choy that I was slicing, how beautiful is it!?