1. Absorb most of the liquid with a towel. Don't rub the stain in, just press lightly on the stain.
2. Pour salt on it to absorb the rest. If you brush off the salt and the stain is still there, you can moisten the stain with cold water and repeat the salt process.
3. Next time you wash the garment you can put stain remover (like lemon soap or dish soap) on the stain before putting it in the machine.