I can remember a few fuzzy memories from before age 4, but I usually don't know how old I was in those memories until a relative who was there can confirm it.
But back on point, my earliest memory is going to a fancy Italian restaurant for some sort of large family gathering. I was sitting at a huge round table with a lot of relatives all around. I had to sit on a booster seat to reach the table, and I ate a big plate of spaghetti and made a huge mess.
I was 2 at the time.