Spicy Kale and Split Pea Soup

This was so so.  I thought the spices would give it a nice flavor but oddly I didn't really taste the spices.  Maybe I overcooked this?  I was a little concerned about using opened vegetable broth that had been in the fridge for over 7-10 days (I thought it was unopened when I started to cook) but it didn't smell so I assumed it would be fine to use.

http://reciperenovator.com/special-diets/vegan/spicy-kale-and-split-pea-soup/