The most common and most likely answer to this crossword clue is the 7 letter word ROASTER
I've seen this crossword clue in The Guardian
R
O
A
S
T
E
R
More clues leading to the result ROASTER
- Roll filled with a fowl for the oven
- Chicken maybe turning yellow with boss losing head
- Pan with King Edward potato, perhaps
- It helps you brown a roll on the outside
- List including a chicken, perhaps?
- List including a chicken, for example
- Adult in new resort, perhaps one’s just too steamy?
- Roll over a pig?
- Article in list, something cook might need
- Sartre novel about ordinary hot day
Buddy explains!

The straight part
We know that "potato, perhaps" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case potato, perhaps = roaster.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 ROASTER mean?
ROASTER noun- One who roasts food.
- A kitchen utensil used for roasting.
- A chicken, pig, etc. suitable for roasting.
- A furnace used in making ball soda.
- One who roasts or banters, especially as a comedy routine.
- A hot Jupiter.
- An objectionable person; somebody making a fool of themselves.