If you dreamt that you were having a coffee with someone else, it's possible you might have feelings for that person.
Or it could be indicative of how hospitable and sociable you are in your waking life if people feel comfortable enough to come to your home for a coffee and conversation.
If you saw a coffee pot, it's generally thought to be a sign that you share your hopes, concerns and ideas with others- you're an open book and don't keep too many things close to your chest. It can also signify the comfort and companionship of friends and family.
If your mouth was full of dry coffee- it's possible that you are trying to accept a decision you've made of late and finding it difficult. Or perhaps you are struggling to say something you really feel because you’re worried about how people will react nor can’t find the right way to let it out.
If you were trying to make coffee and something was making it harder- like no spoon, a broken kettle or no coffee- this could be an indicator that you are trying too hard to impress others and neglecting your own needs. Or it’s possible you have aspirations to do something but feel you lack to the tools to do it. Perhaps you feel you need more training or practice in something to help you move forward or the support of those around you if you think that’s lacking.
Another thought process is that you're often the one who stimulates conversation with groups and creates a buzz about particular events or topics. This might work particularly well for you in your place of work to keep the morale high. It could also be a source of irritation for some so it might be worth judging it accordingly.
The Complete A-Z Dictionary of Dreams by Ian Wallace