Cryptic crossword clue
Selection of caramel decafs, US blend 4

The most common and most likely answer to this crossword clue is the 4 letter word MELD

M
E
L
D

Buddy explains!

The straight part
We know that "US blend" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case us blend = meld.
The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.
This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.

What does MELD mean?

MELD verb
  1. To combine multiple similar objects into one
MELD noun
  1. A combination of cards which is melded.
MELD verb
  1. In card games, especially of the rummy family, to announce or display a combination of cards.

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