Hazelnut Spread: why 320 g per cup is wrong
King Arthur Baking ingredient weight chart publishes 320 g per US cup of hazelnut spread. This site rejects that figure and publishes 296 g instead, from Nutella (Ferrero) nutrition label (density 1.2511 g/mL, matching the composition of the substance). The reason:
King Arthur's 320 g/cup figure is 8.1% above the exceptionally tight producer convergence at 296 g/cup, which is anchored by USDA's reference entry (NDB 19125) and matched exactly by Nutella (Ferrero), Lidl, Walmart Great Value, Sprouts, and Target Good & Gather. Every US retail brand aligns to 37 g per 2-tablespoon serving on the nutrition panel. The gap exceeds the 5% fat tolerance and appears to be another instance of King Arthur's fluid-ounce measurement pattern producing a systematic overweight, though smaller here than the sweet rice flour and rice flour corrections.
The arithmetic
| Source | 1 cup | Density | Status |
|---|---|---|---|
| King Arthur Baking ingredient weight chart | 320 g | 1.3527 g/mL | Rejected on physics |
| Nutella (Ferrero) nutrition label | 296 g | 1.2511 g/mL | Published here |
The published figure and its sources
The full sourcing for hazelnut spread, 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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