Elise Bauer

ground beef

of dried mushrooms (porcini, morels or other mushrooms)

Worcestershire sauce

kosher salt (add more if you like burgers a little saltier)

freshly ground black pepper

fresh shiitake mushrooms (can substitute button or cremini), sliced

large onion, sliced thin (about 2 cups)

olive oil

Salt

slices of Swiss cheese

Burger buns