ul. A sour smell is fine, but there's a big difference between sour and putrid, trust your nose.</p>

<p>Most problems occur after <a href='#openedjar'>opening a jar</a>, due too much exposure to air or high room temperatures. If you take the right precautions all should be fine.</p>

<p>Accidentally eating a bad lacto-fermented product is very unlikely. So far, we've only had one instance of mold (see above photo) due to a bad rubber seal for a dry-salted ferment. The carrots hadn't yielded enough brine, o