Nindya: Let's make infused water.

Andi: Sure. What do we need to make infused?

Nindya: What flavor do you want? Do you want apple, lemon, lime, or strawberry?

Andi: Lime is nice, I think.

Nindya: Okay. So, we need limes, mineral or boiled water, and ice cubes.

Andi: What equipment do we need?

Nindya: We need a knife, a pitcher, and cups.

Andi: What should we do then?

Nindya: First, wash the limes and slice them thinly.

Andi: Like this?

Nindya: Yes. Now, fill the pitcher with mineral or boiled water and put the slices of lime in it.

Andi: What will we do with the ice cubes?

Nindya: Put the ice cubes in the pitcher to make the water cool 

Andi: Can we drink it now?

Nindya: No. We have to wait until the water is flavored and cool. It may take one or two hours. If we do not have ice cubes, we can put the pitcher in the refrigerator to cool it. After that, we can serve the infused water.

Andi: I see. I thought it was difficult, but it turns out to be easy.

Why do they have to wait before they drink the water?