This chowder recipe is very flexible. You can adapt it to ingredients you have on hand. No mushrooms? Leave them out. Don't care for corn? Skip it. Love bacon? Add it! The point is, use the overall formula to create a chowder from ingredients you have on hand.
2 to 4tablespoonsfatI used duck fat
1/2 to 1oniondiced
3 to 4clovesgarlicdiced or crushed
3cups wild mushroomsdiced, about the number of whole mushrooms pictured