What is this? Is it edible?

This plant popped up in a field we planted, it's not one we intentionally planted, however excess stock food is often scattered here, so it could be a "volunteer" from that. The sap is clear and it smells somewhat like young broccoli. I'm pretty certain it's edible but I want to make sure.

 

Mollugo verticillata?

 

I think you've got it! Thank you so much! :)

 

I hadn't known anything about this, but here is an interesting article on the Eat the Weeds site.

 

I love that site! :)