Your Coffee Grounds Can Go in the Compost. What About the Rest of Breakfast?
Food Systems
Coffee grounds and fruit peels can go into a typical backyard compost bin. Add dry leaves or plain shredded cardboard alongside them. This balances the wetter scraps with carbon-rich material and helps air move through the pile.
The EPA advises keeping meat, dairy, oils and grease out of typical backyard bins. Those materials can attract animals or need conditions that a home pile may not reach.
If you use a local food-scrap collection service, check its accepted materials separately. A commercial facility may be able to handle items your backyard pile can’t.
Source
EPA: Composting at Home