Mushrooms deliver a magical wallop of umami to soup, stews and sauces. When cooked correctly, their rich and decadent flavor most often associated with red meat gives vegetarian entrees a boost. Take Beef Bourguignon, the iconic French stew; when made with mushrooms, it is equally elegant.
To achieve such robust flavor and texture, the mushrooms must be cooked to the same mahogany perfection that we expect from beef. The biggest mistake most people make in cooking mushrooms is not cooking them long enough. The longer they cook, the firmer, denser and meatier they become.
It's simple. Just start by heating a little oil or butter in a skillet and then add the mushrooms in batches. The pan should be hot enough that you can hear them sizzle as they release their juices. Do not throw a whole pound of mushrooms into the skillet and crowd the pan because they will become soggy as they stew together and turn into a rubbery mass. Given more room to sizzle, they will caramelize as their juices evaporate and develop a deep glaze, or fond, that becomes the flavor base.
I prefer to buy mushrooms in bulk, choosing ones that look firm without nicks or that aren't discolored, and then store them in a paper bag in the refrigerator. (If they're packaged, I remove and transfer them to a paper bag.) To prepare mushrooms, just trim the stems with a paring knife and then wipe them with a damp towel or soft brush. If using portobello mushrooms, use a teaspoon to remove the gills. Don't run mushrooms under water — they become soggy, and any excess surface moisture will inhibit the browning.
Cooked mushrooms will keep in a covered container for several days in the refrigerator or may be frozen, ready to add to soups, stews or as the basis for this Mushroom Bourguignon.

Mushroom Bourguignon
Serves 4 to 6.
This wintry Bourguignon relies on a quality stock. Use your own homemade or a reliable brand of chicken, beef or mushroom stock. Use a mix of mushrooms for the best flavor: cremini, portobello, shiitake as well as the more unusual varieties — chestnut, lion's mane, oyster and maitake, now available in grocery stores. From Beth Dooley.
• 1 tbsp. extra-virgin olive oil, plus more as needed