Dreaming about serving coffee to your mother's ex-husband can symbolize feelings related to your family dynamics or unresolved issues from the past. The act of serving coffee might indicate a desire to nurture or connect with those around you, even if the relationships are complicated. Not recognizing him at first could reflect a sense of detachment or unfamiliarity with certain aspects of your family history or the emotional connections tied to that person.

Consider what emotions you felt during the dream. Were you comfortable, anxious, or indifferent? This can help you understand how you navigate relationships and whether there are lingering feelings you need to address regarding your family or your mother's past. It may also be worthwhile to explore how you perceive your role in familial situations and any unresolved feelings you might have toward family members.