An oniony kick balances mushrooms in lo mein

The scallions are an oniony counterpoint to the mushrooms here, and a modest amount of soy sauce and sesame oil give the dish a light Asian taste without drowning the mushrooms' flavor.

You'll need a large pan for this; I use a shallow 13-inch braiser. If you don't have a big enough pan, cook the mushroom-scallion mixture in two batches.

Note that the vegetables can be prepped and refrigerated several hours in advance.