Possible Clues:

• Drink company covering most of Ulster, perhaps
• Drink with some Acapulco coastguards
• Ski-lodge quaff
• Beverage with marshmallows
• Variety of Puffs or Krispies
• Starts to chew over coffee or alternative drink
• Lightish brown colour of a drink
• Brown beverage
• 2+2, coming to a powder
• Doubly firm, top grade drink