Quick, easy, and delicious
Slice avocado around the perimeter (top to bottom) and separate halves. Remove and reserve pit.
Scoop avocado flesh into a small bowl and mash until smooth.
Stir in lime juice, onion and sour cream, and mix well.
Salt and pepper to taste.
Place the reserved pit into the guacamole to prevent/delay discoloration and cover tightly. Store in refrigerator until ready to use. Place cling wrap in direct contact and covering the surface to provide oxygen intrusion.
Best served the day it's made.