Sanitization, or: the most boring thing that will save your wine

Of all the things we could write a blog post about, this is the least sexy. It is also, by a wide margin, the one that will decide whether your wine is good or whether you spend six weeks making a bucket of disappointment. Sanitization is the boring step that does ninety percent of the work.

We have ruined exactly two batches in ten years. Both were sanitization failures. Both tasted like a wet basement. Neither mistake was fancy or interesting — we just got lazy with a brush. So here is the version of this post we wish someone had handed us before batch one.

Cleaning is not sanitizing

These are two different jobs and you need to do both, in order. Cleaning removes visible gunk — old yeast, sediment, dried wine, whatever your dog walked through. Sanitizing kills the microscopic stuff that's left over after cleaning. Sanitizer on a dirty surface is just expensive water.

Clean first. Sanitize second. Always in that order. Forever. We will die on this hill.

What to actually buy

That is the entire list. Total spend, somewhere around thirty-five dollars, and the Star San bottle will last you two years.

Star San in plain English

Mix one ounce of Star San per five gallons of water. Or, more usefully: one teaspoon per gallon. Or, even more usefully: a glug into a spray bottle of water until it foams up a little. It's pretty forgiving. The foam is fine — 'don't fear the foam' is a phrase you will hear about ten thousand times in this hobby and it's true. The foam doesn't hurt anything and you don't need to rinse it. That's the whole pitch. That's why it exists.

Contact time is about thirty seconds. That's it. You spray the inside of a carboy, swirl it around for half a minute, dump it out, and you're done. Star San is the closest thing this hobby has to a cheat code.

The actual workflow

Here is the routine, every single time you touch your wine. We do not deviate from this and neither should you, at least not for the first ten batches.

Notice that 'sanitize, then leave it on the counter for two hours' is not on the list. Sanitization is for the moment you are about to use the equipment. If you sanitize and then walk away, you are starting over.

What gets infected and how you'll know

Wine doesn't really 'spoil' the way milk spoils. What happens is that off-flavors creep in — wet cardboard, vinegar, nail polish remover, band-aids. (Yes, band-aids. It's a real thing. It's called Brettanomyces. It's why some people pay extra for Belgian beer and most people pay zero for it in a Cabernet.) If your wine smells wrong, it's almost certainly a sanitization failure from weeks earlier.

There is no fix. There is only 'next batch we will be more careful.' That's the deal. That's why we do the boring step.

The one habit that will save you

Sanitize the moment before contact. Not the night before. Not 'while I'm down there anyway.' Right before. If you do nothing else from this post, do that — and your wine, for the rest of your hobby, will be fine.