How would you separate coffee and sand?

Separating coffee grounds from sand can be accomplished through several methods depending on the quantity and resources available. Here are two common techniques:

Sieving: This method is suitable for smaller quantities of coffee and sand.

1. Gather a fine-mesh sieve or strainer with holes small enough to let the coffee grounds pass through but retain the sand.

2. Place the mixture of coffee and sand over the sieve.

3. Gently shake or tap the sieve to let the coffee grounds fall through the holes.

4. Collect the separated coffee grounds and the sand separately.

Water Separation: This technique is effective for larger quantities or mixtures with a low coffee-to-sand ratio.

1. Transfer the mixture to a large container filled with water.

2. Coffee grounds being less dense than sand will float on the surface, while the sand sinks to the bottom.

3. Carefully skim the floating coffee grounds using a spoon or a fine-mesh net.

4. Drain the water, carefully avoiding the floating coffee grounds.

5. Spread out the wet coffee grounds and let them dry completely.

Remember to exercise caution when handling hot coffee grounds or water. Once both components are separated, it's advisable to further dry and roast the coffee beans to restore their flavor and aroma.