Place the avocado, mayonnaise, anchovy filets, green onion, lemon juice, garlic, salt, and pepper in a blender.
Process the ingredients until the mixture becomes smooth.
Transfer the dressing to a glass jar with a lid.
Chill the dressing in the refrigerator for 24 hours before serving.
Notes
Tips and Tricks
Choose a Ripe Avocado - Select an avocado that yields slightly to gentle pressure. This ensures a smooth, creamy texture when blended.Rinse the Anchovies - Rinse the anchovy filets under cold water before chopping them. This removes excess salt and prevents the dressing from becoming too salty.Chill Overnight - Allow the dressing to chill for the full 24 hours. This gives the flavors time to meld together and creates the best taste.Adjust Consistency - Add 1 to 2 tablespoons of water or lemon juice if the dressing is too thick. Blend again until you reach your desired consistency.Store Properly - Keep the dressing in an airtight glass jar. This prevents oxidation and keeps the bright green color longer.Taste and Adjust - Before serving, taste the dressing and add more salt, pepper, or lemon juice if needed. Everyone's taste preferences are different.
Storing
Refrigerate - Store the dressing in a glass jar with a tight-fitting lid in the refrigerator for up to 3 days. The avocado may darken slightly over time, but the flavor remains good.Prevent Browning - Press a piece of plastic wrap directly onto the surface of the dressing before sealing the jar. This minimizes air exposure and helps maintain the bright green color.