Add grilled chicken or beef slices to turn this side-dish salad into a main-meal salad.
The dressing can be made up to 2 hours ahead of time and refrigerated. The crispy tortilla straws can be made up to 2 days ahead; cool them completely, then pop them into a resealable plastic sandwich bag.
Ripeness is the key when using avocados. Fully ripened avocados have a rich, smooth flavor and soft, buttery texture. When not ripe, avocados are hard with little