UK Barrels
A UK barrel is 36 imperial gallons (not to be confused with American gallons), about 163.659 liters or 0.163659 cubic meters. It is based on the traditional wine barrel used in the United Kingdom.
US cups
A US cup is a common unit of measurement in the United States for cooking and baking. One US cup is about 0.236588 liters and is often used to measure ingredients in recipes.