gravy

(noun) a sauce made by adding stock, flour, or other ingredients to the juice and fat that drips from cooking meats.

(noun) the seasoned but not thickened juices that drip from cooking meats; often a little water is added. Synonyms: pan gravy.

(noun) a sudden happening that brings good fortune (as a sudden opportunity to make money). Synonyms: boom, bonanza, gold rush, godsend, manna from heaven, windfall, bunce. Example: "The demand for testing has created a boom for those unregulated laboratories where boxes of specimen jars are processed like an assembly line."