Picking the best avocados is by far the most important part of this entire toast. I love using Hass avocados, however, you can use other types. Always make sure that they are fully ripe but over-ripe (meaning it's extremely soft to the touch). For the best check---always look for avocados that have a good squeeze and isn't too hard or too mushy/soft. Also, once open, if you find that there are brown bits or sections, be sure to cut those out and discard of them before you mash everything.