### Clue: Top number recalled as potential tearjerker? (5)
### Answer: ONION 
 ### Explanation: Definition: potential tearjerker
 **Reversal of**(… recalled, in a down clue) [NO. I(Number 1/the top/the best, with the Roman numeral substitution) + NO(abbrev. for "number")].
Defn: … when you're peeling it.