Zucchini, shredded

One US cup of zucchini, shredded weighs between 135 and 135.5 grams, depending on how the cup is filled and which source measured it. That range is the answer; a single number would not be. Every figure behind it is below, with the method each source used.

Also called shredded zucchini, grated zucchini, courgette shredded, shredded courgette, grated courgette.

Shredded zucchini weighs 121-150 g/cup depending on the individual zucchini's water content. King Arthur's ingredient weight chart acknowledges this by publishing the entry as an explicit range rather than a single figure, a rare move on their chart. Aggregator sources cluster near the middle at about 135 g/cup.

Zucchini is a summer squash with high water content (roughly 94-95% water by weight), and that water content is the source of the density spread. A young, tight-fleshed zucchini right off the plant weighs less per cup shredded than an older, larger zucchini whose flesh has accumulated more water. Storage age matters too — a zucchini that has spent a week in the refrigerator may have lost moisture through the cut ends and skin. All of this variance is real and inherent to the ingredient rather than something the baker can control by technique.

King Arthur has this ingredient in their chart at 121-150 g/cup, and unlike many entries where this catalog has corrected KA's figure, no correction is warranted here. KA's range is honest and matches three other aggregator sources that publish a midpoint around 135 g/cup. This is one of the cleaner KA entries — they engaged with the actual product variance rather than picking a defensible-looking single number.

Critical operational guidance from King Arthur's baking blog: do NOT squeeze water out of shredded zucchini before adding it to batter. Zucchini quick breads, muffins, and cakes are formulated to absorb the released water during baking — that water is part of the recipe's hydration budget. Squeezing produces overly dry baked goods. This is the opposite of what many bakers instinctively do when they see the wet pile of shreds on the cutting board. The rule holds even when the shredded zucchini has sat for 10 to 20 minutes and pooled water in the bowl; the recipe still wants that water.

Measurement guidance: pack shredded zucchini loosely into the measuring cup rather than pressing it down. Pressing compacts the fibers and packs more mass into the cup than the recipe assumes. If the recipe specifies weight in grams, weigh; if it specifies cups, spoon in loosely and level off with a knife or your fingers.

Substitutions: shredded yellow summer squash works 1:1 by weight or volume with nearly identical moisture behavior. Grated carrots are the next-closest substitute in quick breads and muffins, though carrots run slightly denser at about 100-110 g/cup and contribute both color and sweetness that zucchini does not — expect the finished bake to be darker and sweeter. Grated apple can substitute in some quick breads but shifts moisture release timing during baking, since apple pieces hold their water longer than zucchini and release it in a burst late in the bake.

For volume-only recipes without gram weights, using a mid-range figure around 135 g/cup as a mental default is defensible. For weight-specified recipes, weigh — the specified gram figure is what the recipe developer tested against and is more reliable than any volume estimate.