Every year, Gwen makes cookies for a class of first-graders who come trick-or-treating at her office. A couple of nights ago, she made two batches of butter cookies, each using a different recipe—one that her mom used throughout her childhood, and another that she found online . She stored them in tupperware until last night, when we decorated them. I opened the box containing the ones made using the online recipe (which is butterier, and which I liked better) and the escaping aroma instantly transported back to the time when I was in first grade myself, probably the last time I had a Salerno butter cookie. I hadn’t even thought of Salernos in decades, but I instantly remembered the daisy shape, the hole in the middle that I could stick my finger through, the smell, and the taste. We all know that the sense of smell is the sense that evokes memories most strongly, and this was a potent example. It was only that batch that did it for me though—not the other one.

Unsurprisingly, Gwen preferred her mom’s recipe. Because that’s tied to her memories.