Add the oil to a large pot or Dutch oven and place over medium-high heat. Add the onion and garlic and cook until fragrant. Stir through the tomato paste.: When the oil shimmers faintly, the scent of sautéing onion and garlic will fill the kitchen, signaling that the base is forming. You should hear a gentle sizzle and see the edges of the onion turn translucent, with small flecks of golden color forming, which indicates natural sugars are releasing. Stirring in the tomato paste lets it bloom in the oil, turning a deeper, glossy red and giving off a sweeter, toasted aroma. This step is crucial because it creates a caramelized backbone that the rest of the chili rides on. If you rush by using high heat, the aromatics can brown too fast or burn, producing bitter notes. If the pan seems too dry during this stage, lower the heat and add a splash of water to prevent sticking while preserving flavor.
Add the ground venison and break it up using a wooden spoon. Cook until it is no longer pink.: You will notice the sound shift to a firmer, more robust sizzle as the ground venison hits the hot base, and the meat will start to release juices that mingle with the tomato paste and aromatics. Use the wooden spoon to separate the meat into small pieces so it browns evenly, developing browned bits that add savory complexity. Browning creates Maillard flavors, which are essential for a rich chili. Keep the heat at medium to medium-high; too low and the meat stews rather than browns, too high and it can toughen. A common mistake is stirring constantly and preventing proper contact with the pan, which reduces browning. Let small sections sit briefly to form color before stirring.
Add all the spices, then pour in tomatoes and beans and bring to a boil. Reduce heat to medium and simmer for 15 minutes or until most of the liquid is absorbed, stirring occasionally.: As you sprinkle in the spice mix, the pot will release an immediate waft of layered aromas, warm and earthy. Stirring them in now allows the heat to activate the oils and release volatile flavor compounds. Pouring in the canned diced tomatoes and canned kidney beans introduces a bright acidity and body, and when the liquid comes to a boil you will see bubbles burst and steam carry the scent around the kitchen. Reducing to a steady medium simmer lets the sauce thicken and the flavors concentrate, and you should notice the liquid reduce and the chili transform into a cohesive mixture. Stir occasionally to prevent sticking and to taste for balance. Over simmering without liquid can dry the pot, while under simmering leaves flavors disconnected. If the chili is too thin after 15 minutes, continue simmering a bit longer, if it becomes too thick, add a few tablespoons of water.
Remove the chili from the heat, ladle into bowls and add your toppings of choice.: After the pot comes off the heat, the aromas settle into a warm, inviting bouquet, and the surface may show small pockets of oil and shimmering spice, which indicates a well developed sauce. Letting the chili rest briefly helps the flavors meld and the temperature even out, making each spoonful rounded and balanced. When you ladle into bowls, notice the texture and how the beans and meat hold together; that is a sign the simmering was successful. A typical slip is serving immediately off boil, which leaves edges overly hot and the flavor less integrated. If you plan to garnish, choose toppings that provide contrast in texture or brightness to lift the bowl.