Gravy

Gravy was a sauce, although there were several definitions of what a gravy was. In most cases, it was a sauce that accompanied roasted meats — made from the cooking juices of those roasted meats. (PROSE: Kursaal, Casualties of War) It could also be the sauce element that held together stews and casseroles. (PROSE: Grimm Reality)

When served at a table, it was served in a jug known as a gravy boat. (PROSE: Casualties of War)

Cornflour was used in the production of gravy as a thickening agent. Potato water and stock was also used. (PROSE: Damaged Goods)

Yorkshire puddings were served with roast meats and gravy on Earth. (PROSE: No Future)

Gravy could also be eaten over chips. (AUDIO: No More Lies)

Whilst on the planet Albert, at a pub called The Singing Bone, Fitz Kreiner ordered a mutton stew which came in a large bowl with half a loaf of bread sitting in the middle soaking up its gravy. (PROSE: Grimm Reality)

Information from invalid sources
A takeaway which Ryan Sinclair once visited sold gravy for 10p. (NOTVALID: The Universe is Calling)