What is the best way to measure the volume of a jug of squash?

The best way to measure the volume of a jug of squash is to use a graduated measuring container. Pour the squash from the jug into the measuring container until it is full, noting the measurement. Alternatively, if the jug is marked with volume indicators, you can simply read the measurement directly from the jug. For more accuracy, ensure the jug is on a flat surface and the squash is at eye level when reading the measurement.