<human>: Objective: How can I soothe serious burns?

Which of the following solutions is more sound in terms of naive physics reasoning?

OPTIONS:
- Freeze some stinging nettle in ice trays and rub the cubes on burned or throbbing areas.
- Freeze some aloe vera in ice trays and rub the cubes on burned or throbbing areas.
<bot>: Freeze some aloe vera in ice trays and rub the cubes on burned or throbbing areas.