What is with all this sediment?

[Thomas]

If you are storing in a cool cellar it might not all be sediment, especially the chunk stuff. One way to tell is to look at the cork. If the sediment clinging to the cork is lighter in color it might be cream of tartar.

It could be tartaric precipitation--or it could be both tartaric and sediment.

In $10-15 wines perhaps the producer neither filters nor cold stabilizes.