| Clue | Source | Date |
|---|---|---|
| It makes an appearance in the box as a sort of salt (7) | ||
| Container filled with extremely inert salt (7) | ||
| Salt, it needs putting in container | The Times Cryptic | 04 Jul 2023 |
| Tart flavoring chemical | Thomas Joseph | 29 Aug 2018 |
| Salt -- it is packed in box | The Telegraph Cryptic | 17 Jun 2016 |
| Sildenafil __: Viagra | ||
| Chemical salt | ||
| Sildenafil ___ (Viagra's active ingredient) | ||
| Fruit salt | ||
| Sildenafil ___ (Viagra's generic name) | ||
| Lemon ester | ||
| Ester used in food flavorings | ||
| Salt of citric acid | ||
| Ester of a fruit extract. | ||
| Acid salt. | ||
| Fruit acid derivative. |