Rinse and dry completely. Remove leaves from stems to chop. Onions Chop. Pulse 5-10 times to chop to desired size. Peel; Cut into 3⁄4-inch or smaller pieces of similar size. Mushrooms Chop. Pulse to chop to desired consistency. Choose firm, fresh mushrooms. Cut into quarters or even-size pieces, no larger than 3⁄4-inch. Nuts Chop.
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