Related Clues:

• Sour beer - one sort of lager, perhaps?
• Sour grapes -- or, rather, a product therefrom
• Member in non-drinking organisation right off beer?
• In grave trouble, certainly in a pickle
• Upset in grave kind of pickle
• Sour liquid
• Acidic condiment
• Condiment
• Condiment — bad temper
• Ketchup ingredient
• Salad dressing, given a shake, at last runnier
• Mounting anger after French wine proves acidic stuff
• Soured wine, cider etc.
• Pickling condiment
• Peevishness gets one in grave trouble