Possible Clues:

• Muse, taking drink at home - tea possibly?
• Ponder taking strong drink during tea break
• Give some thought to one in eight of the apartments, by the sound of it
• One choose to do this with one drink in eight (8)
• Contemplate putting alcoholic drink in tea perhaps
• One drink in one of 11 across, by the sound of it, gives one somethig to chew on
• One drink in eight, by the sound of it, is enough to give you something to chew on
• Think over - as cows do?
• Meditate, or chew the cud
• One drink in eight sounds enough to chew on