Sediment - The most commonly asked question (when it comes to wine) is what is this stuff?
Sediment is primarily insoluble fragments of grape pulp/skins and dead yeast cells, or leaves for those of you taking notes.
There is no real proof that sediement means high-quality wine. In fact, too much sediment can mean quite the opposite! High amounts of sediment can indicate that the wine-making process was rushed or the winery had unsatisfactory bottle storage conditions.
Although safe to drink, we would not recommend it.