Chicken

Chicken goes on the bottom shelf of the refrigerator, in a container or on a plate that catches drips. This is not fussiness: raw poultry juice is the single most common vehicle for cross-contamination in home kitchens, and the bottom shelf means a leak lands on a wipeable surface instead of on the lettuce below.

Leave it in its store packaging until you cook it. Every transfer is another chance to spread bacteria across your sink and counters. If the package is leaking, put the whole thing in a zip-top bag rather than repacking the meat.

For the freezer, overwrap the store tray in freezer paper, foil, or a freezer bag. The thin film on a supermarket tray is designed for display, not for months at 0°F, and chicken left in it develops freezer burn within weeks. Push the air out before sealing — air contact is what dries the surface into that gray, leathery patch.

Thaw in the refrigerator, never on the counter. A package thawing at room temperature reaches unsafe surface temperatures long before the middle is soft.

Cook poultry to 165°F — color is not doneness.

Two entirely different things are happening to refrigerated chicken, and only one of them is visible.

The visible one is spoilage bacteria, mostly Pseudomonas species. They tolerate cold, multiply steadily at 40°F, and as they consume the surface proteins they produce the sticky film and sour, sulfurous smell everyone recognizes. This is what makes chicken obviously bad.

The invisible one is pathogen growth — Salmonella and Campylobacter, the organisms that actually make you ill. They produce no slime, no smell, and no color change. A piece of chicken can carry an infectious dose while looking and smelling completely normal.

That gap is the whole reason the refrigerator window is 1–2 days rather than "until it smells off". Your nose detects the harmless spoilers, not the dangerous ones. Cooking to 165°F destroys both, which is why internal temperature — not appearance — is the real safety control.

In the freezer nothing grows at all. At 0°F chicken stays safe indefinitely; the 9-month figure is purely about texture and flavor loss from ice-crystal damage and oxidation.

The date stamped on a chicken package is almost never a safety deadline. A "sell by" date is an inventory instruction for the store, telling staff when to pull it from the case — you are expected to keep it at home for a while afterwards. "Best if used by" is the manufacturer's estimate of peak quality.

Neither overrides the 1–2 day refrigerator rule. Chicken bought on its sell-by date still needs cooking or freezing within 1–2 days. Conversely, a package three days from its date that has been sitting in your fridge for four days should be discarded.