Yogurt typically lasts about 7 to 14 days (1 to 2 weeks) in the refrigerator after opening , provided it is stored properly at or below 40°F (4°C). This timeframe aligns with USDA recommendations and multiple food safety sources

Key factors affecting yogurt's shelf life after opening:

• Storage temperature: Keep yogurt in the coldest part of the fridge, not the door, to avoid temperature fluctuations that speed spoilage

• Handling: Use clean utensils to avoid introducing bacteria that can cause spoilage

• Container sealing: Keep the container tightly closed or transfer to an airtight container to limit exposure to air and contaminants

• Visual and sensory checks: Discard yogurt if it develops mold (green or blue fuzzy spots), off smells, or unusual texture changes

Additional notes:

• Greek yogurt may last closer to the upper end of this range (up to 2 weeks) due to its thicker consistency

• Yogurt can also be frozen to extend its usability, though texture may change upon thawing

• Use your senses to judge safety: if yogurt smells sour or looks moldy, it should be discarded regardless of the date

In summary, after opening, consume yogurt within about 1 to 2 weeks for best quality and safety, always storing it properly and checking for spoilage signs before eating.