Human: What are some tips to remove a coffee stain from my upholstery? Assistant: 

1. Blot the stain with a clean cloth to absorb as much of the coffee as possible.
2. Mix a solution of one part white vinegar and one part water.
3. Lightly dab the stain with the vinegar solution and then dab the stain with a damp cloth.
4. If any stain remains, apply liquid dishwashing detergent or heavy-duty laundry detergent to the stained area.
5. Blot the area and rinse with a clean damp cloth.
6. Repeat as necessary and then air dry the upholstery.
7. If any discoloration remains, you may need to purchase a spotting agent from a local fabric store.