What's the pronoun for two uncountable nouns?

Question

Which is correct?

• I bought some beef and pork. All of it looks fresh.
• I bought some beef and pork. All of them look fresh.

Since both "beef" and "pork" are uncountable nouns, I think the we should use the pronoun "it" to replace "beef and pork."

However, when it comes to the following sentence, I think we should consider them as plural to make the subject agree with the verb. And that makes me confused.

• Beef and pork are expensive.

Answer 1

you are comparing apples and oranges

with

I bought some beef and pork. All of it looks fresh

I think... You have turned beef and pork into a single item you bought some meat, a single item

but with

Beef and pork are expensive.

you are creating a list of items that are expensive.