For the best flavor and texture, choose well marbled beef chuck roast rather than very lean cuts, since the fat keeps the meat moist during the long simmer and enriches the broth. If you prefer a slightly thicker stew, you can reduce the broth longer with the lid off to let some liquid evaporate instead of adding any starch based thickeners. This stew stores well in the refrigerator for up to 4 days and the flavors deepen over time, making it a great option for meal prep, and it also freezes well in individual portions for up to 3 months. Reheat gently over low heat on the stovetop, adding a splash of broth or water if the stew has thickened too much, and avoid boiling hard after adding any cream to keep the texture smooth. Feel free to customize the flavor by adding sliced mushrooms with the celery or increasing the red pepper flakes for more heat, keeping in mind that low carb vegetables with similar carb counts can usually be swapped in without affecting keto macros substantially.