Pack wet ingredients separately, not in the sandwich

The only reliable way to stop a sandwich from going soggy is to keep wet ingredients like tomatoes and dressing out of it until you’re ready to eat.

The best move is simple: put the dressing in a little dip container and the tomato slices in a separate snack bag or mini container. Assemble at your desk or wherever you eat. It takes ten seconds and completely kills the problem. If that feels like too much fuss, at least build a barrier. Spread both slices of bread with a layer of mayo, butter, or cream cheese — that repels the moisture. Then put the tomato between the spread and the lettuce, not against the bread. Dry tomatoes well with a paper towel before slicing too.

Forget the “tomato between the ham” trick; that just makes the ham wet. The real fix is to stop the moisture from touching the bread until the last possible second. If you’re packing for a kid or someone who won’t assemble, toast the bread first — it holds up way longer against moisture.

Future You at noon will get a crisp sandwich instead of a sad, wet mess. That’s worth carrying one extra little container.