For the best flavor, prepare the chili a day ahead and chill it in the refrigerator overnight, then gently reheat on the stovetop before serving because the spices mellow and deepen over time. If you prefer a looser chili, stir in a splash of additional beef broth during the final simmer, and for an even thicker texture, let the pot simmer uncovered a bit longer so excess liquid can evaporate. This recipe freezes very well, so portion the cooled chili into airtight containers and freeze for up to 3 months, thawing in the refrigerator before reheating over medium heat with a splash of broth if needed. Always choose canned tomatoes and tomato paste with no added sugar to keep carbohydrates low, and adjust onion quantity down slightly if you need to shave off a gram or two of net carbs per serving to fit strict macros. For extra richness, you can stir in a spoonful of butter or a drizzle of olive oil at the end of cooking to boost keto-friendly fats without adding carbs.