Mushrooms, to dry.
Cut off their stalks, and cut or scrape out the gills, and with a little salt put them into a saucepan. Set them on the fire, and let them stew in their own liquor; then pour them into a sieve to drain. When dry, put them into a slack oven upon tin plates, and, when quite dry, put them into shallow boxes for use.
The liquor will make ketchup.