Your sandwich needs a moisture barrier.

The trick to a non-soggy sandwich is keeping wet ingredients off the bread — which means layering them against each other, not the bun.

Soggy sandwiches are a layering problem, not a time problem. Tomatoes, pickles, and condiments are the offenders. If they touch bread, they soak in by noon. The fix: put the wet stuff in the middle. Meat and cheese work as a shield, but a big leaf of lettuce is better — it takes the moisture hit so the bread doesn’t have to. Think of it as a sandwich burrito. Wet inside, dry outside.

A couple of other moves help. Toast the bread lightly before you build — 60 seconds in a toaster or a dry pan changes everything. Pat tomatoes and pickles dry with a paper towel. And don’t assemble while ingredients are warm, because that steam turns into condensation and you get mush by lunch.

The separate condiment tub works too, but it’s mostly for control freaks. The barrier method is enough.

Future You deserves better than wet bread.