Possible Clues:

• Small cup used for serving Turkish or espresso coffee
• Cup — runner holds it during service
• Cup that's cracked set aside, milk initially seeping through
• Cup of tea missed in state of confusion
• Small cup doctor set aside, containing mocha primarily
• A little coffee set aside to be drunk with the last of cream
• Engineer missed tea for a cup of coffee?
• Tea missed abroad? Small cup of coffee provided
• Missed tea being served? Get a measure of coffee
• Cup missed, tea spilled