1. Bring turkey carcass, onion, carrot, celery, garlic, wine, bay leaf, and 4 1/2 quarts water to boil in 12-quart stockpot over medium-high heat, skimming fat or foam that rises to surface. Reduce heat to low and simmer, uncovered, 2 hours, continuing to skim surface as necessary. Add parsley and thyme; continue to simmer until stock is rich and flavorful, about 2 hours longer, continuing to skim surface as necessary.
2. Strain stock through large-mesh strainer into large bowl or container; remove meat from strained solids, shred into bite-sized pieces, and set aside; discard solids in strainer. Cool stock slightly, about 20 minutes; spoon fat from surface. Use stock in one of the related recipes or cool to room temperature, cover, and refrigerate up to 2 days.