Dealing with coffee stains early in the morning is the last thing you want on a busy day filled with meetings, a pitch, and responding to emails.
For a fresh coffee stain, act promptly by rinsing the stained area with cold water to allow the stain to lift from the fabric. The quicker you do this, the greater the chance of the stain disappearing entirely, and sometimes this simple step is all that is required.
If the stain is still visible, try this:
Keep the stain wet and apply liquid detergent and let it sit for 3-5 minutes. If the stain doesn't disappear, repeat this process until the stain is completely removed.
When the stain is no longer visible, simply wash the garment as normal.