They bring water, fibre, acid and colour. Most are 80–95% water, and much of cooking them is really about managing that water.
Under a lid they cook in their own water; in a crowded pan they steam. If you want colour, give them room and take the lid off.
This record describes edible orange segments; do not use its fibre value for strained juice.
How to keep it, and who it suits.
Refrigerate in a mesh bag for 2-3 weeks; once cut, keep sealed for 3-4 days.
Plain orange is naturally gluten-free.
45 — glucose is taken as 100. Below 55 is low, 56–69 medium, 70 and above high. The number says nothing about portion: at the same index, twice the amount is twice the load.
The source table has a single study for this food. It is a real measurement, but it may not be typical: variety and ripeness move this number easily.
Row in the table: Oranges, navel, Australia (45+/-5)
Atkinson et al., Am J Clin Nutr 2021
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Apple (with skin)85.6% water · 52 kcal
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Pear84% water · 57 kcal
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Quince83.8% water · 57 kcal
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Fig (fresh)79.1% water · 74 kcal
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