An oil infuser is a kitchen appliance designed to extract flavors from herbs, spices, and other ingredients into oils. By gently heating the oil and combining it with the chosen ingredients, the infuser allows for the creation of flavored oils that can enhance various dishes. These oils can be used in cooking, salad dressings, or as finishing touches for meals. Most oil infusers are user-friendly and come with settings to control temperature and infusion time. Some models even have built-in filters to separate the oil from the solid ingredients, making it easy to use the infused oil right away. Popular ingredients for infusion include garlic, chili peppers, and rosemary.