Jus (juice) lie (thickened) is pan drippings made into a sauce and thickened with a slurry (water + thickening agent such as cornstarch or arrowroot).Click to see full answer. Beside this, what is the difference between a sauce and a jus?Jus is made from the same juices that has been refined and condensed to get a clear liquid naturally thickened. Sauce could be made from the same juices with other ingredients added such as wines or spirits to compliment the food. Sauces can be served hot or cold. what is jus LIÉ? Jus Lié Rate & Review. A French term referring to meat juice that has been lightly thickened with a either arrowroot or cornstarch. A similar term “au jus” meaning “with juice” describes the serving of meat, most often beef, with the natural juices that were produced while the meat was being cooked. One may also ask, what is au jus sauce made of? Au jus sauce is made primarily of beef broth, often with the addition of onion, garlic, soy, Worcestershire and other complementary flavors.What is fond lie?Fond lie. Also know as Jus lie; a sauce made by thickening brown stock with cornstarch or similar starch; often used like a demi-glace, especially to produce small sauces.