01 - Melt butter over medium heat in a medium saucepan, or use warm pan drippings directly from roasting meat.
02 - Whisk flour into melted butter to form a smooth roux. Cook while stirring constantly for 2-3 minutes until mixture turns lightly golden and releases a nutty aroma.
03 - Gradually pour stock into the roux while whisking continuously to ensure smooth incorporation and prevent lumps from forming.
04 - Bring mixture to a gentle simmer. Cook for approximately 10 minutes, whisking frequently, until sauce reaches desired consistency.
05 - Add salt, pepper, and dried herbs if using. Taste thoroughly and adjust seasoning as needed. For an ultra-smooth texture, strain through a fine-mesh sieve before serving hot.