Our baby's first food!

Our nearly 5 month old has started eating solids.  When we had our first daughter, our doula recommended avocado for her first food because it was full of healthy goodness, and tasty too.  Since then, we've read articles that avocados are great for baby's first food, so we figured we do the same for this daughter as well.  No need to mix breast milk with cereal (filled with added stuff in the ingredient list).  It seems to me that she liked it.