@tylerstone easy 1. Dry, minimum 24 hours soaked in water. Rinse well. 2. Fresh cut mirepoix, size and type of cut appropriately for intended soup. 3. You should really make your own stock from bones that still contain marrow. Or vegetable stock from scraps. But, none of these are shortcuts. So here is the shortcut versions from a previous professional: 1. Canned. 2. Frozen. 3. Bouillon. To thicken, use a corn starch slurry instead of a traditional flour & butter roux.