Cookie butter: why 240 g per cup is wrong
Lotus Biscoff Cookie Butter (producer label) publishes 240 g (8.5 oz) per US cup of cookie butter. This site rejects that figure and publishes 288 g (10.2 oz) instead, from King Arthur Baking Ingredient Weight Chart (density 1.2173 g/mL, matching the composition of the substance). The reason:
Two tablespoons hold 29.6 mL, and 30 g is what that volume of water weighs. Cookie butter is about 38% fat, 37% sugar and 20% biscuit starch, which together weigh about 1.24 g/mL with no air in them; at 1.01 g/mL a fifth of the jar would have to be air, and the spread is a dense paste, not a whipped one. Store-brand labels for the same recipe, at the same 5.7 kcal per gram as Lotus, weigh 2 tablespoons at 37 g, and King Arthur weighs a quarter cup at 72 g.
The arithmetic
| Source | 1 cup | Density | Status |
|---|---|---|---|
| Lotus Biscoff Cookie Butter (producer label) | 240 g8.5 oz | 1.0144 g/mL | Rejected on physics |
| King Arthur Baking Ingredient Weight Chart | 288 g10.2 oz | 1.2173 g/mL | Published here |
The published figure and its sources
The full sourcing for cookie butter, 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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