Possible Clues:

• A service in church - source of wine?
• Constable perhaps probes type of bar where this is served?
• Server with a big mouth
• (Wine) flask
• Is the ace far from holding water?
• A drop of rouge in restaurant in appropriate container
• Open-topped glass flask
• A recipe in restaurant -- it may contain wine
• Glass container painter required in teashop
• Charge covering a fine house wine served in this