How do you separate vegetable oil salt and sand?

To separate vegetable oil, salt, and sand, you can use a combination of filtration and decantation. First, pour the mixture through a filter paper in a funnel to separate the sand, which will remain on the filter, while the oil and salt solution passes through. Next, heat the filtrate to evaporate the water, leaving the salt behind, while the vegetable oil remains unaltered. This method effectively isolates each component based on their physical properties.