Black Bean salad

Our group at work got together and held a pot-luck picnic at Emma Long Metropolitan Park. I decided to make a cold, black bean salad. It was pretty easy to make and turned out tasty. I cooked the beans and diced the remaining ingredients. It was a mixture of beans, cucumbers, tomatoes, and mangoes. Unfortunately, only a tiny bit was actually eaten by people. I kept a couple of meals worth for me. But threw out 95% of it because it sat out all day. Oh well, I guess I won't go to the effort to make something from scratch again...