Guava paste: why 480 g per cup is wrong
Goya Guava Paste, 16 oz (producer label) publishes 480 g (16.9 oz) per US cup of guava paste. This site rejects that figure and publishes 320 g (11.3 oz) instead, from Conchita Guava Paste (USDA Global Branded Foods) (density 1.3526 g/mL, matching the composition of the substance). The reason:
Heavier than solid sugar. A crystal of sucrose weighs 1.59 g/mL, and a paste that is about a quarter water cannot weigh 2.03 g/mL. Fifteen servings of 30 g are the whole 16 oz block, so the 30 g is a slice cut from the block labelled as a tablespoon. Goya's own 8 oz paste gives 19 g for the same tablespoon.
The arithmetic
| Source | 1 cup | Density | Status |
|---|---|---|---|
| Goya Guava Paste, 16 oz (producer label) | 480 g16.9 oz | 2.0288 g/mL | Rejected on physics |
| Conchita Guava Paste (USDA Global Branded Foods) | 320 g11.3 oz | 1.3526 g/mL | Published here |
The published figure and its sources
The full sourcing for guava paste, including every accepted and rejected figure, the state or filling method behind each, and the physics or standards reasoning applied, is on the ingredient page.
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