How Long Does Tofu Last?

How long does opened tofu last in the fridge?

Opened tofu lasts 3-5 days in the refrigerator when stored submerged in fresh water in an airtight container. Change the water daily; stale water becomes a breeding ground for bacteria that accelerate spoilage. Use cold water (not warm) and ensure the tofu is fully covered; tops exposed to air develop a slimy surface quickly. Firm and extra-firm tofu generally last longer than silken or soft tofu (which has a higher water content from manufacturing). Pressed tofu (water already removed) can be stored in a sealed container without water for 3-5 days. Pre-marinated or flavored tofu lasts only 3 days because the additional ingredients can spoil faster than plain tofu. Smoked or fried tofu lasts 5-7 days due to the additional processing.

How long does unopened tofu last?

Unopened tofu lasts until the printed use-by date when stored continuously refrigerated, typically 1-2 weeks from purchase for fresh tofu in the refrigerated section. Shelf-stable tofu (sold unrefrigerated in aseptic packaging, common with Mori-Nu brand silken tofu) lasts 6-12 months unopened at room temperature thanks to high-heat processing. Once shelf-stable tofu is opened, it must be refrigerated and follows the 3-5 day timeline like fresh tofu. The 'use by' date on fresh tofu is conservative; properly refrigerated tofu often remains safe and usable 2-3 days past the printed date if the package hasn't been opened or damaged. Check for off smells or sliminess before using tofu past its date.

Can you freeze tofu?

Yes, and freezing actually transforms tofu in a useful way. Frozen tofu lasts 5 months and develops a chewier, meatier texture as ice crystals expand and create small holes throughout the tofu block. The result absorbs marinades and sauces better than fresh tofu, which is why many vegetarian recipes specifically call for previously-frozen tofu. Freeze tofu in its original packaging or transfer to a freezer bag with as much air pressed out as possible; the package liquid prevents freezer burn. Thaw frozen tofu overnight in the fridge, then press out the additional water that's released; the tofu may look slightly yellow or beige after thawing, which is normal. Use thawed tofu in stir-fries, scrambles, or marinated dishes where the chewier texture is a feature.

How do you tell if tofu has gone bad?

Spoiled tofu shows several clear warning signs. A sour, fermented, or rancid smell distinct from the normal mild, slightly beany aroma signals spoilage; the smell is often noticeable as soon as you open the container. The texture may become slimy or sticky on the surface, particularly when stored without fresh water; sliminess is the most common early sign. The color may shift from white or pale cream to yellowish, gray, or brown spots, which indicates bacterial growth. Visible mold (white fuzz, green spots, or fuzzy patches) means immediate disposal. Cloudy water or water that has thickened in the storage container suggests bacterial activity even if the tofu looks normal. When in doubt, throw it out; spoiled tofu can cause food poisoning quickly.