There are a few that are very vague but this one stands out clearly. I was a small kid and walked into the kitchen of the little apartment where we lived. My mom was cooking dinner and I had come in specifically to ask her a question “Mummy, how old am I?”
She replied that I was about to turn 4 years old!! And so my earliest clear (as crystal) memory is at the age of 4, asking my mom how old I was.
What’s your oldest memory?