How do I solve 13 across in Express Cryptic 20260520?

Question

Accepted Answer

13 across reads "On-the-spot coffee, say - no use, a disaster" (13 letters); the answer is INSTANTANEOUS. It's an anagram clue: the answer is a rearrangement of letters supplied by the clue itself. Look for an indicator like 'mixed', 'broken', 'cooked', or 'wild', and find a phrase whose letters add up to the answer's length. The full step-by-step breakdown is on this page.

On-the-spot coffee, say - no use, a disaster (13)

13A — On-the-spot coffee, say - no use, a disaster (13) — INSTANTANEOUS