Crossword Genius

Two dairy products into one (5,6)

Ross

I believe the answer is:

cream cheese

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'one' is the definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.

'two dairy products' is the wordplay.
'two dairy products' means two substitutions for 'dairy product'.
'dairy product' becomes 'cream' (cream is a kind of dairy product).
'dairy product' becomes 'cheese' (cheese is a kind of dairy product).
'cream'+'cheese'='CREAM-CHEESE'

'into' acts as a link.

Can you help me to learn more?

(Other definitions for cream cheese that I've seen before include "Rich dairy product" , "Soft dairy product" , "something for those crackers" , "Food" , "White foodstuff" .)

I've seen this clue in The Mirror.
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