| Clue | Source | Date |
|---|---|---|
| Grub that keeps you smart, and a theme hint | Universal | 21 Jan 2022 |
| Fish, it's said | USA Today | 06 Jan 2019 |
| Fish, it's said | ||
| Sardines, berries and sage, they say | Wall Street Journal | 31 May 2016 |
| Meal for the mind | ||
| Fish, according to an old wives' tale. | ||
| Fish, traditionally. |