Become familiar with a pulp product (3,2)

I believe the answer is:

pal up

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'become' is the definition.
Although both the answer and definition are verbs in their base form, I don't understand how one could define the other.

'familiar with a pulp product' is the wordplay.
'a pulp' anagrams to 'PAL UP'.
But, I am not clear how this is indicated.

Can you help me to learn more?

(Another definition for pal up that I've seen is " Get friendly".)

I've seen this clue in the Evening Standard.

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