How much is a 100 grams?
One hundred grams is a little over 3.5 ounces. But mushrooms
don't weigh very much. Depending on whether we are talking about
sliced mushrooms, which lay close together, or whole mushrooms,
which leave big gaps between the mushrooms, 3.5 ounces of sliced
mushrooms is a little over a cup full and 3.5 ounces of whole
mushrooms would be about a cup and a half in volume.