Possible Clues:

• Half-__ (latte order)
• Half- — (Starbucks request)
• Potent java, slangily
• Half- — (coffee mix)
• Lunchroom, slangily
• Half-___ (coffee request)
• Stimulating substance, briefly
• Half-__: coffee spec
• Half- -- (coffee order)
• Half- -- (java order)