O Olive Oil is a San Francisco-based company that sells artisanal olive oils and vinegars, with a focus on California-sourced products. Their collection includes flavoured varieties such as blood orange and roasted garlic olive oil, as well as carefully aged vinegars made from California vines. They offer free shipping on orders over $125 and have received positive customer feedback for the quality of their products. They would suit referrals from customers looking for premium, artisanal cooking ingredients to enhance everyday meals.