Mascarpone

One US cup of mascarpone weighs 227 grams. Going the other way, 100 grams is about 0.44 cups.

Also called mascarpone cheese, italian cream cheese, italian-style cream cheese, mascarpone di panna.

TL;DR: Mascarpone converges tightly at 227 g/cup across King Arthur's chart and major producer labels (BelGioioso and Trader Joe's both list 14g per tablespoon = 224 g/cup). Density around 0.95 g/mL follows directly from mascarpone's 44-55% milkfat composition.

Mascarpone is an Italian fresh cheese made by heating cream and setting it with an acid (traditionally tartaric or citric, industrially glucono-delta-lactone). It has no rennet, no aging, and no cultures — technically a heat-set fresh cheese rather than a true cultured dairy product. Milkfat content sits at 44-55% depending on the brand, much higher than American cream cheese (33-38%), giving mascarpone its signature richness and silky texture. Bakers use it as the base of tiramisu (its defining application), in cheesecakes and no-bake versions, folded into buttercream frosting for extra richness, in pasta sauces (particularly with mushrooms or sausage), and as a topping for fresh fruit or waffles.

Density is physically constrained by the fat-water composition. Butterfat has a density of 0.911 g/mL at room temperature; water is 1.00 g/mL. A 44% fat / 55% water mascarpone (with roughly 1% solids) calculates to 0.951 g/mL, or 225 g/cup. A 55% fat mascarpone calculates to 0.941 g/mL, or 223 g/cup. King Arthur's chart figure at 227 g/cup (density 0.960 g/mL) sits at the upper end, consistent with brands that include light stabilizers or slightly lower fat content. BelGioioso and Trader Joe's both publish 14g per 1 tablespoon on their nutrition labels, giving 224 g/cup. Convergence across authoritative sources is tight (1-2% variation), well within the 5% liquid tolerance. This is one of the cleanest density entries in the dairy category.

Mascarpone versus cream cheese: the two products look similar but behave differently in baking. Cream cheese (American style, per FDA standard of identity) requires minimum 33% milkfat and maximum 55% moisture, typically stabilized with locust bean gum and carrageenan for structural integrity. Mascarpone has 44-55% milkfat, no rennet, no cultures, and in traditional Italian production no stabilizers. Cream cheese is tangier due to bacterial culturing; mascarpone is milder, sweeter, richer. In texture, cream cheese holds its shape when cool; mascarpone is softer, silkier, and prone to breaking (curdling) when overheated or over-whisked. Cup weights are similar (KA lists both at 227 g/cup) because the higher fat in mascarpone is roughly balanced by its lower water content, but 1:1 substitution changes the finished product noticeably — cream-cheese tiramisu tastes tangier and denser than mascarpone tiramisu.

Mascarpone versus crème fraîche: also distinct. Crème fraîche is cultured cream at 30-40% fat, cultured with lactic acid bacteria for a tangy flavor, still pourable at room temperature (KA lists it at 226 g/cup). Mascarpone is heat-set with an acid, has higher fat, and holds a spoonable and spreadable form. Both work in similar dessert contexts, but crème fraîche brings acid brightness while mascarpone brings richness.

Italian PDO regulations for authentic mascarpone (produced in Lombardy) specify a minimum 40% milkfat and require whole cream from cows. Most US brands are not PDO-certified but follow similar composition, though some add stabilizers (guar gum, carrageenan) for shelf life. For the closest-to-traditional experience, look for brands with only three ingredients: pasteurized cream, skim milk (or milk), and citric acid or glucono-delta-lactone as the setting agent.

Practical baker recommendation: use mascarpone at cold or slightly cool temperature — never bring it fully to room temperature the way you would butter or cream cheese. Mascarpone loses structure and can turn grainy when warm. Fold gently rather than whisking vigorously to avoid breaking the emulsion. For any recipe calling for a specific gram amount, weigh from the tub; the 14g/tbsp label figure is reliable, but scooping semi-solid cheese into a measuring cup often leaves air pockets that under-measure. Substitution: cream cheese works as a 1:1 emergency substitute but changes flavor and firmness noticeably; a blend of 8 oz cream cheese plus 1/4 cup heavy cream approximates mascarpone's fat content and texture better than cream cheese alone.