If you bought avocado to make this and realized that your avocado are really firm (so they're not ripe yet), simply put the avocado in a brown bag and close the top. Leave the bag out on the counter overnight. The next day, the avocado skin will be squeezable and the avocado flesh will be soft enough to cut. ​If you still don't feel like your avocados are ripe enough, use one in the dressing and don't use the other in the potato salad instead. Just save it to use in one of our other avocado recipes.