Tomato purée is a kitchen staple that makes soups richer, sauces smoother, and stews more flavorful. Whether you use it for pasta sauce, curry, or homemade pizza, keeping a container in the refrigerator can make everyday cooking easier.
But what happens when you open the fridge and discover a half-used carton or jar you forgot about? The color may look normal, and the smell might not seem particularly unusual. Is it still safe to use, or is it time to throw it away?
The good news is that there are several warning signs to look for. Mold, an unusual smell, unexpected bubbling, and changes in texture can all indicate spoilage. However, appearance alone cannot guarantee that tomato purée is safe, so proper storage and handling matter just as much.
Here's how to check your tomato purée and decide when it's best to discard it.
1. Look for Mold
<AsyncImage query="mold growing on leftover tomato sauce in open glass jar close up" aspectRatio="16:9" width="100%" />
One of the clearest signs of spoilage is visible mold.
It may appear as fuzzy white patches, green or blue spots, or darker areas on the surface or around the inside of the container. Mold can sometimes develop around the rim, particularly if food residue has been left there.
If you see mold on tomato purée, discard the entire contents. Don't simply scrape off the affected portion. Soft, moist foods can allow mold and potentially associated contaminants to spread beyond the area you can see.
Avoid smelling the mold closely or tasting the purée to check whether it is still good.
2. Check for an Unusual Smell
