Why is avocado bitter?

So, the biggest reason is the avocado isn't ripe yet. When they are hard, they have more of some natural stuff that tastes bitter. As it gets soft and ripe, that bitter taste goes away and it gets creamy and yummy. That's why you have to wait for them to be a little soft.

Another thing is the part right next to the dark skin. That part can be bitter too. Same for the part close to the big seed. So I try not to scrape the skin too much when I scoop it out. And if you cook avocado, don't make it too hot. High heat can also make it taste bad. Hope that helps