Black olives have tannin in them – that is what turns them black. I read that can be good for your immune system.

They have a lot of fat in them too. So I tend to eat olives on days that I am not eating other fatty foods – just to keep everything in balance.

I bought these on one of those buy-lots-for-not-much sales at Giant grocery store a couple of weeks ago. So far I have just had one can. Need to work my way through the rest.