First, you need to know what you bought. Fresh, unpasteurized cider is a living thing—it’s basically liquid autumn with active yeast and bacteria. That bottle will ferment, fizz, and transform within a week or two if you leave it out.
On the other hand, pasteurized cider is the shelf-stable superhero. It’s been heated to kill the wild microbes, so it can chill in your fridge for weeks without drama. But even superheroes have limits, friend.
The Telltale Signs (No Lab Coat Required)
So how do you know your cider has gone from delightful to dubious? Trust your nose first. If it smells like sour vinegar, fruit wine, or wet gym socks, it’s time to say goodbye.
Next, look for fizz and floaters. A few bubbles are just the cider saying “hello,” but a furious foam or murky sediment means it’s throwing a fermentation party without your permission. And you weren’t invited.
Finally, take a tiny taste. A sharp, funky, or completely flat flavor that makes you pucker weirdly? That’s your cue. But here’s the twist—a slightly fizzy, mildly tart cider might actually be deliciously alcoholic.
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