Instant ___ Crossword Clue

 The answer to the crossword clue "Instant ___" can be COFFEE, MESSAGE, or PASTE.

Instant coffee is coffee that has been pre-brewed and dehydrated. It can be made quickly and easily by adding hot water.

Instant message is a message that is sent and received electronically. It is a more informal way of communication than email.

Instant paste is a type of adhesive that is applied to a surface and dries quickly. It is often used to repair small tears or holes in paper.

The specific answer that is correct will depend on the context of the crossword puzzle.