[london.food] Fresh and frozen spinach

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From: Kate L Pugh
Subject: [london.food] Fresh and frozen spinach
Date: 21:22 on 22 Mar 2004
muttley posted a link to this place a while ago:
  http://www.foodsubs.com/

Now I have been trying to work out equivalencies between fresh and
frozen spinach.  That site has a page
  http://www.foodsubs.com/Greenckg.html
which says that "One pound fresh = 1 cup cooked = 5 ounces frozen".
Hmm, says I, that doesn't sound quite right.

So I did an experiment.  I cooked 125g of fresh spinach (that was all
I had) in just the water clinging to the leaves, until it was roughly
of the consistency of thawed frozen spinach.  Then squeezed out excess
water from the cooked leaves and weighed it again - just over 100g.  I
compared its size with two blocks (100g) of frozen spinach, yup,
looked quite similar.

That is kind of rough eyeballing and quite a small sample, but usually
when I am cooking a recipe of any decent size I just substitute equal
weights of fresh for frozen spinach and all seems happy.

Now foodsubs is saying 1lb (450g) fresh = 5oz (150g) frozen,
  ie 3:1 ratio.
And my experiment and experience are saying 125g fresh = 100g frozen,
  ie 5:4 ratio.

Quite a difference.  Can anyone explain this please?

Kake

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