The most common and most likely answer to this crossword clue is the 4 letter word SODA
I've seen this crossword clue in The Guardian
S
O
D
A
More clues leading to the result SODA
- Fusses about drink
- Fizzy drink son or daughter accepts for starters
- Singular song and dance upset good mixer
- Rising troubles with this kind of bread
- Son – stir flipping drink!
- Turf accountant’s first to get drink
- . Drink when drinking party returns
- Author leaving upset farewell drink
- Pop a nasty piece of work at the start
- Fusses over drink
Buddy explains!

The straight part
We know that "kind of bread" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case kind of bread = soda.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 SODA mean?
SODA noun- Sodium bicarbonate (usually baking soda).
- Sodium carbonate (usually washing soda).
- Sodium in chemical combination.
- Carbonated water (water impregnated with pressurised carbon dioxide, originally made with sodium bicarbonate).
- (especially in the northeast) Any carbonated (usually sweet) soft drink.
- (especially in the northeast) A glass, bottle or can of this drink.
- The first card in the dealing box in the game of faro, which is discarded to leave 51 cards in play.