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Keeping your cave honest through a heat wave

A hot, humid stretch outside makes a cave work harder to hold its numbers inside. Here's what to check before your wheels tell you themselves.

Every affineur we talk to this time of year has the same low-grade worry: the outside air is hot and heavy, the compressor is running longer than it did in May, and a cave that held steady all spring is suddenly working for every degree. If your temperature and humidity logs have looked slightly noisier the last few weeks, you're not the only one, and it's worth being deliberate about it rather than just watching the dial and hoping it settles down on its own.

The same heat and humidity index that troubles a herd in the barn is the thing straining your cave's equipment from the outside in. When the temperature-humidity index climbs past the threshold that stresses cattle, the same weather is making your compressor and dehumidifier work through longer cycles just to hold a stable set point, and older equipment sized for a milder summer can fall a degree or two behind before anyone notices on a daily walkthrough.

Rind health is usually the first place a strained cave shows itself. A washed-rind wheel that's used to a stable 90 to 92 percent humidity will start drying at the edges, or just as often go slick and overly wet, if a dehumidifier is cycling harder than it was built for. A natural rind that normally develops evenly can go patchy — one side facing a vent, the other not — when airflow inside the cave shifts to compensate for a harder-working system outside. None of this means your cheese is unsafe. It means your environment has drifted from the conditions your recipe assumes, and the wheel is telling you before your log does.

What the course covers, and what it doesn't

Our Affinage Fundamentals course spends a full module on exactly this: reading rind behavior as an early signal of environmental drift, and building a response plan before a whole batch is affected rather than after. It is not a substitute for your own food-safety plan, and it doesn't replace the pathogen-control practices that belong in Listeria Control in Small Creameries if you're making the kinds of soft or washed-rind cheeses where that risk runs highest. Think of it as the craft layer that sits on top of your safety plan, not a swap for it.

A few practical habits members have told us help in a summer like this one: check humidity logs at the same time each day rather than glancing at a dial in passing; move temperature-sensitive wheels away from any wall that borders unconditioned space; and resist the urge to open the cave door more often just to check on things, since every open door is its own small heat and humidity event.

Where to take this next

If you want a structured way through this, the next cohort of Affinage Fundamentals is open for enrollment now, and a few members who took it last summer specifically because of a heat stretch like this one have told us it changed how they read their own logs for good. If you'd rather talk it through first, our Education Committee is fielding questions this month, since a strained cave in July is exactly the kind of thing that shows up in a competition entry by fall.

And if you're headed to Louisville for the ICF Annual Conference later this month, there's a hands-on affinage session on the schedule — bring your log book if your cave has been giving you trouble. It is often the fastest way to get a useful answer from another member standing on the floor beside you.


The International Cheese Federation (ICF) and More Cheese are entirely fictional. This post is demonstration content created for MemberJunction. All people, organizations, events, courses, certifications, figures, and quotations in it are invented, and nothing here represents a real association, a real business, a real person, or real professional advice.

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