Prepare the Roux: In a medium saucepan, melt the butter over medium heat. Once melted, add the flour and whisk continuously for 2-3 minutes, until the mixture forms a smooth paste and turns golden brown. This step helps to cook out the raw flour taste and gives the gravy its silky texture.
Add the Stock: Gradually pour in the stock, whisking constantly to ensure no lumps form. Continue whisking until the gravy thickens, about 5-7 minutes.
Season to Taste: Stir in the thyme, salt, and pepper, adjusting as needed. For a creamier gravy, add a tablespoon of heavy cream and stir to combine.
Cool and Store: Once your gravy has thickened, remove it from heat and let it cool. Transfer it to an airtight container and store it in the refrigerator for up to 3 days.
Serve: When ready to serve, simply reheat gravy on the stovetop, whisking occasionally. If gravy has thickened too much, you can thin it with a little extra stock or water. Transfer immediately to a sauceboat and serve gravy warm.
Nermine's Notes
Substitutions: Use cornstarch for gluten-free thickening, or substitute vegetable stock for a vegetarian option.
Additions: Add a splash of white wine for depth, or stir in roasted garlic for a hint of sweetness and aroma.