In my opinion, corn is not a countable noun. To make corn countable, you need a specifier, such as an ear of corn, or a bowl of corn, or 57 kernels of corn (ridiculous). Your first example list nouns that can be considered uncountable and treats them as such. In the west, cake is generally noncountable, though I realize that in Hong Kong, cake means something different and countable so again, your first example is okay, though I suggest it could be improved as in, 'I usually have a cake for breakfast along with some corn , chicken soup, and orange juice.'
Your second example is inconsistent.
I don't like the use of the ampersand in a written sentence.