<human>: Which of the following solutions is better for the following goal:
How do I know when my gelatin is ready to use when making ice cream?

OPTIONS:
- The gelatin is ready to use when it has dissolved into the water and expanded in size.
- The gelatin is ready to use when it has dissolved into the water and turned blue.
<bot>: The gelatin is ready to use when it has dissolved into the water and expanded in size.