please tell whether potato is countable or not?

Hi all!

My friends and I are stuck over a question from an assorted english workbook.
Here is the question we are suffering from:

Q1:
there/is/are/a lot of/many/some/potato/potatoes/in the garden.

Here is an answer we come up with:
A1: There are a lot of potates in the garden.

Please help clarify!

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These are the answers:

There are a lot of/many/some potatoes in the garden.

Potatoes are countable until they have been mashed or otherwise incorporated into a meal and no longer resemble individual vegetables.

Thank you so much for your help, Mister Micawber!

Hi Mister Micawber,

the workbook has been returned, but my score surprised my friends and me a lot!
You probably dont to believe that the sentence
“there are some potatoes in the garden” is wrong.

I asked for reasons, and she explained that

I doubt if she is correct!

.
You’re right: she’s wrong.

Of course, few things are really wrong in English-- we often say There’s rather than There’re because it is easier to pronounce:

“There’s seven sandwiches in the fridge for you.”
.

Thank you very much for your help, Mister Micawber!