1.   I add at least a sliver to most mayonnaise recipes as a gentle background flavor.

2.   Just a pinch of cinnamon is added to the chocolate and coffee to give background flavor to these brownies.

3.   Sausages are often used as a background flavor.

4.   The chorizo adds background flavor and a kind of intangible body and definition to these dishes.

5.   This background flavor gives the dressing a complexity that balances the sweet fruit and tart citrus.