The most common and most likely answer to this crossword clue is the 4 plus 3 letter word CHOC ICE
I've seen this crossword clue in The Times
C
H
O
C
I
C
E
More clues leading to the result CHOC ICE
- Brickie's eye needed to fill top part of course?
- Sweet plum filled with cream, originally
- Sweet treat, cold, with superior casing
- Sweet plum keeps cold
- Option for eating cold food item from the freezer
- Sweet variety, cold in the middle
- Dessert that’s superior, cold inside
- A summery treat that’s cold and best outside
Buddy explains!

The straight part
We know that "part of course/part" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case part of course/part = choc ice.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 CHOC ICE mean?
CHOC ICE noun- A block of vanilla ice cream with a chocolate (or chocolate-like) coating