Yes, expired yogurt typically tastes bad.
Yogurt's expiration date is more of a "best by" date, indicating the peak quality and freshness. After that date, the yogurt may start to develop an off-flavor, sour taste, or a thinner consistency.
This happens because the beneficial bacteria in yogurt, known as lactobacillus, continue to ferment the milk sugars even after the expiration date. This fermentation process can result in a more acidic taste and a less pleasant texture.
While expired yogurt might not be harmful to consume, it's not recommended. The taste and texture may be unpleasant, and the nutritional value might be compromised.
It's always best to err on the side of caution and discard yogurt after its expiration date.
