Tupperdors and Coolerdors

A tupperdor is an airtight food container used as a humidor; a coolerdor is the same idea in a hard-sided cooler. Both are widely treated as a beginner's compromise, and that framing is backwards. On the one measure that determines whether storage works — how well the container holds a gradient against the room — a gasketed plastic box beats most wooden humidors under about $200, needs no seasoning, and holds a setpoint for months with almost no attention.

What you give up is real but narrow, and worth stating before the method.

What You Gain and What You Lose

Gained:

A seal that actually seals. A gasketed latching container is engineered airtight. Wooden humidors are engineered to approximately airtight, and the approximation varies with humidity, temperature and how carefully the lid was fitted.
No seasoning. Plastic is not hygroscopic, so there is no lining to charge. A tupperdor is ready the day it arrives; a wooden box needs one to three weeks of seasoning first.
Stability that borders on boring. With two-way packs sized to the volume, a well-sealed container will sit within a point or two of its rating for months.
Scale for very little money. A cooler holds several hundred cigars for the price of a small desktop humidor.

Lost:

Cedar buffering. Spanish cedar absorbs and releases moisture, damping swings between interventions. Plastic does nothing, so the packs do all the work. In practice a good seal more than compensates — there is far less to damp.
Cedar's aromatic contribution, which some collectors value and others consider overstated.
The object itself. It looks like a plastic box, because it is one. If part of the pleasure is a nice humidor on the desk, that is a legitimate reason to buy one — see choosing a first humidor.

There is one genuine technical caveat: plastic can impart an odour to a collection stored long-term, particularly cheap containers and anything that smelled of plastic when new. Choose food-grade, wash and thoroughly air-dry before use, and add a cedar sheet or two if you want buffering and aroma back.

Setting One Up

Container. Food-grade, rigid, with a gasket and latches rather than a press-on lid. Clear sides are convenient. For coolers, any hard-sided camping cooler works; the drain plug should be closed and taped, and the interior aired out for a few days if it smells of plastic.

Humidification. Two-way regulating packs (Boveda and equivalents) rated at your target — 65% is the common choice, 62% for drier storage, 69% if you prefer the wetter end. Size by interior volume, not cigar count, and round up: an under-provisioned container reads below its rating indefinitely. For a large cooler, expect to need several of the biggest packs available.

Instruments. A tested digital hygrometer inside, and a second one at the far end of anything cooler-sized. Do not skip the salt test — calibrating a hygrometer is what makes any of these numbers mean something.

Optional cedar. Thin Spanish cedar sheets, or the empty cedar boxes your cigars came in, laid inside. This restores some buffering and aroma. Cigars stored in their original boxes inside a coolerdor are a common and effective arrangement.

Loading. Same rule as any container: about 75% full, so air can circulate and the interior behaves as one environment rather than several pockets.

Settling in. Close it and leave it. Check daily for the first week, then weekly. Because there is no wood to charge, a tupperdor typically settles within two or three days rather than the weeks a new wooden box takes.

Where They Genuinely Excel

Overflow storage. A desktop humidor for what you're reaching for, a coolerdor for long-term holdings. This is the standard arrangement for collections past a couple of hundred, and it works because the long-term container is the one you want most stable and least often opened.
Quarantine. New acquisitions, or anything you're unsure about, held separately until you have inspected them properly. Cheap enough to own a dedicated one, and worth it — the point of mould versus plume is that one contaminated container can pass through a whole collection.
Recovery. Stepped rehydration of dried cigars needs a container you can hold deliberately below your normal target for a week or two. A tupperdor with a 62% pack does this precisely; see raising or lowering humidity.
Travel and moving. Sealed, unbreakable, and indifferent to being carried.

Multiple Containers, One Record

The moment you run a desktop box plus a coolerdor, "where is it" stops being answerable from memory, and the point of tracking each lot against its container becomes obvious: it is the only way to notice that the cigars disappointing you all came out of the same box. Recording container and its RH alongside each session is exactly the field pair most journal formats omit — the reasoning is in how to keep a cigar journal, and there is a printable template with those columns already in it.

Temperature still applies, incidentally. Plastic offers no thermal buffering at all, so a coolerdor in a warm garage is a beetle risk regardless of how well it holds humidity — see humidor temperature.

FAQ

Is a tupperdor as good as a humidor? For holding a stable humidity, usually better — a gasketed container seals more reliably than most wooden boxes under a couple of hundred dollars, and needs no seasoning. What it lacks is cedar buffering, cedar aroma, and any aesthetic appeal.

Do I need to season a tupperdor? No. Seasoning charges a hygroscopic cedar lining with moisture; plastic absorbs nothing, so there is nothing to charge. Wash it, air it until any plastic smell is gone, add packs and instruments, and load it.

How many humidity packs does a coolerdor need? Size by interior volume rather than cigar count, and round up — under-provisioning is the usual reason a container sits below its rated humidity. A large cooler commonly needs several of the biggest packs available, and they last longer than in a leaky wooden box because less moisture escapes.

Will plastic make my cigars taste like plastic? It can, mostly with cheap containers or ones that smelled strongly when new. Use food-grade plastic, wash and air-dry it thoroughly first, and add cedar sheets or store cigars in their original cedar boxes inside the container.