How long does white wine last after opening?

* 3-5 days in the refrigerator: This is for most white wines, especially drier varieties like Sauvignon Blanc, Chardonnay, and Pinot Grigio.

* 1-2 days in the refrigerator: Sweet white wines like Riesling and Moscato tend to oxidize faster, so they have a shorter lifespan after opening.

* Up to a week in the refrigerator: Some fortified wines like sherry or vermouth can last longer due to their higher alcohol content and added preservatives.

Factors affecting shelf life:

* Wine type: As mentioned above, sweet wines spoil faster than dry wines.

* Storage conditions: Keep the wine in the refrigerator to slow down oxidation.

* How much air is in the bottle: A full bottle will last longer than a partially filled one.

Signs of spoiled wine:

* Vinegar-like smell: This is a major indicator of spoilage.

* Brown or cloudy appearance: Oxidation changes the color of wine.

* Fizzy texture: This indicates bacterial growth.

* Off-flavor: Spoiled wine may taste sour, bitter, or have an unpleasant metallic taste.

Tips to make opened wine last longer:

* Use a wine stopper: This minimizes air exposure.

* Store in a cool, dark place: Avoid direct sunlight.

* Vacuum seal the bottle: Use a wine vacuum pump to remove air from the bottle.

* Freeze leftover wine in ice cube trays: This allows you to use small portions later.

If in doubt, it's always better to err on the side of caution and discard any wine that shows signs of spoilage.