The most common and most likely answer to this crossword clue is the 4 letter word SPUD
I've seen this crossword clue in The Times
S
P
U
D
More clues leading to the result SPUD
- Potato chips ultimately followed by desert
- NI political party’s upset Murphy
- Small sweet potato
- Potato small and sweet
- Dessert on small side dish?
- Unlikely constituent of Christmas pudding?
- Touch of salt and some dessert
- Vegetable seconds with a little dessert
- Dig succeeded, turning up bit of debris
- Murphy rejecting the Unionists’ shilling
Buddy explains!

The straight part
We know that "side dish?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case side dish? = spud.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 SPUD mean?
SPUD noun- A potato.
- A hole in a sock.
- A type of short nut (fastener) threaded on both ends.
- Anything short and thick.
- A piece of dough boiled in fat.
- (usually in the plural) A testicle.
- A dagger.
- A digging fork with three broad prongs.
- A tool, similar to a spade, used for digging out weeds etc.
- A barking spud; a long-handled tool for removing bark from logs.
- (drilling) To begin drilling an oil well; to drill by moving the drill bit and shaft up and down, or by raising and dropping a bit.
- (roofing) To remove the roofing aggregate and most of the bituminous top coating by scraping and chipping.
- (camping) To set up a recreational vehicle (RV) at a campsite, typically by leveling the RV and connecting it to electric, water, and/or sewer hookups.
- A game for three or more players, involving the gradual elimination of players by throwing and catching a ball.