first real food

i kept going over lists to see what a good first food would be for an almost six month baby. i read that avocado was a good one to try out, and easy for both baby and parents - it doesn't have to be cooked first! we mashed one up last night to see how cayden would do with it. i was impressed. his first reaction was pretty much as expected, but overall, he handled it well. we'll try the avocado again for three more nights and then move on to something else (maybe bananas!). everything i've read says to try a food for at least three days; if the baby is going to be allergic to it, it would show up by then. maybe tmi, but i'm interested to see how this affects his poop. weird, right?