Blues rock started with rock musicians in the United Kingdom and the United States performing American blues songs. They typically recreated electric Chicago-style blues songs, such as those by Muddy Waters, Jimmy Reed, Howlin' Wolf, and Albert King, at faster tempos and with a more aggressive sound common to rock.
Vinegar-based condiments, such as mustard, relish and horseradish, keep for 12 months or until the expiration date in unopened jars in the pantry. An open mustard container can still keep for 12 months if you store it in the refrigerator, but it can spoil within one month if you keep it at room temperature. An open container of relish lasts six months refrigerated and should not be stored in the pantry.
The rules for these two are as follows: Mayonnaise: Good for 3-4 months after date on package if unopened and stored in the pantry. Good for 2-3 months after date on package if opened and stored in the refrigerator. Ketchup: After opening it is good for 1 month in the pantry and 6 months in the refrigerator. But before it is opened it is good for up to a year in the pantry.