Still trying.

Brands matter. See if you can match the brands that your mother used; especially the mayonnaise. Bacon will be harder to match.

In 1969, my family would have made its own mayonnaise, so try that, too.

If I want a flashback to my childhood, it's peanut butter and jelly. But it has to be Skippy peanut butter on Wonder bread with Smuckers jelly, and freezing cold whole milk. Anything deviation doesn't trigger the same brain cells.