Start by gathering all your ingredients. Cut the lime in half and squeeze to yield 1 tablespoon of juice. Set it aside.
Finely chop the fresh green chili and the scallion (both white and green parts). This will add a lovely crunch and flavor to your guacamole.
Cut the avocados in half, remove the pit, and scoop the flesh into the mixing bowl. Use a fork or potato masher to mash the avocados until you reach your desired consistency—smooth or chunky, it's up to you!
Mix in the lime juice, salt, chopped chili, and scallions. Stir well to combine all the ingredients evenly.
If your guacamole is too thick, gradually add the lukewarm water, one tablespoon at a time, until you achieve the perfect creamy texture.
Give your guacamole a taste and adjust the seasoning if necessary. You might want to add a bit more lime juice or salt depending on your preference.
Transfer your Stay Green Prepare Ahead Guacamole to an airtight container. Press a piece of plastic wrap directly onto the surface of the guacamole before sealing with the lid. This will help keep it fresh and green.