The Coffee Sommelier is a GPT designed to assist users in improving the quality of their homemade coffee. This AI tool, developed by Parth Gandhi, provides expert advice on enhancing the flavor and experience of coffee brewing and drinking. It works by interacting with users in a chat-based interface, putting the knowledge of a master coffee sommelier at the fingertips of any coffee lover or enthusiast. The Coffee Sommelier aims to convert user's experiences with their coffee, from bitter or sour tastes to a perfect cup. Users can engage in a conversation with the GPT by providing information about their coffee brew's current state, and the Coffee Sommelier will respond with potential solutions or suggestions to fix the issue related to coffee taste. Users are encouraged to use various prompt starters, such as 'My coffee tastes sour!', 'I hated my coffee :(', and 'How do I fix my daily coffee?'. This ChatGPT tool, which requires a ChatGPT Plus subscription, welcomes users with a friendly message: 'Hello! I'm here to help you make your coffee taste better. Let's start!'. However, all coffee lovers, not only those with a subscription, can benefit from the expert advice of this AI-based coffee consulting GPT.