The most common and most likely answer to this crossword clue is the 6 letter word QINTAR
I've seen this crossword clue in The Times
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The straight part
We know that "Foreign bread" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case foreign bread = qintar.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 QINTAR mean?
QINTAR noun- (plural: qindarka or qintars) An Albanian coin equal to one hundredth of a lek.
- (plural: qintars) A unit of measure, which varies in value depending upon the product measured; for example, a qintar of cotton might be 160 kg of cotton, 50 kg of cotton lint; a qintar of lime, 65 kg.