how many grams in a cup of mushrooms?

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conversion reference

things people ask

• How much does a cup of sliced mushrooms weigh?
  About 78 g for raw white button or cremini mushrooms, sliced about a quarter-inch thick. Whole or quartered mushrooms pack tighter and run heavier — closer to 95-100 g per cup. Diced fine, you might land around 110-120 g because there's less air between pieces. The 78 g figure assumes loose slices spooned into the cup rather than pressed down.
• Why do recipes call for mushrooms by the cup if they shrink so much?
  Because cup measurements describe what you start with at the cutting board, not what ends up on the plate. A cup of raw sliced mushrooms cooks down to roughly a third of a cup, so a recipe asking for '4 cups sliced mushrooms' for a risotto is really telling you to buy about a pound. If a recipe gives a cooked volume instead, you'll need to start with three to four times that much raw.
• Do shiitake, oyster, and portobello weigh the same per cup as button mushrooms?
  No. Shiitake caps are denser and drier, running about 85-90 g per cup sliced. Oyster mushrooms are airy and irregular — closer to 65-70 g per cup. Portobello, when diced, is meaty enough to hit 95-105 g per cup. The 78 g figure is reliable for white button and cremini specifically; for the wilder shapes, weigh if the ratio matters.

related conversions

• Mushrooms: tablespoons to grams
• Mushrooms: teaspoons to grams
• Mushrooms guide