| Clue | Source | Date |
|---|---|---|
| Heat rating system for chili peppers | USA Today | 09 Dec 2025 |
| System used for measuring the heat of chillies | Mirror Tea Time | 22 Jul 2024 |
| Heat measurement system, or a hint to the pepper types at the starts of 20-, 24- and 42-Across | Universal | 03 Jun 2020 |