It looks like a pronoun to me. "Some flour should be enough" sounds a bit odd to me. I would expect more of a specific quantity to be stated, not "some".
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
AnonymousSome flour should be enough to make the pancake properly.It's a strange construction as "enough" is a subject complement in that sentence, so "Some [enough] flower" or "[Enough] some flower" doesn't make much sense.
AnonymousSee my suggested fix in red above.SomeOne cup of flour should be enough to make the pancake properly.