Possible Clues:

• Large drinking-cup
• Half-heartedly consume tea, say, in large cup
• Large handleless drinking-cup
• Large drinking cup for a small mouth?
• Leave Britain with sanction to find Grail?
• For a little mouth, a big glass!
• Drinking-vessel speaker allowed
• Get up to where the turf is and allow it to hold your drink
• Only a mug would have a drink in this
• Drinking vessel in our country is nothing to the French model