It can take up to 15 min. for the water to come to a boil for cooking the turkey carcass. For a clearer stock, cook the ingredients just at a gentle simmer since boiling or stirring the stock as it cooks will result in cloudy stock.
How to Cool Stock
To cool the cooked stock quickly, pour it into a large pot, then place in a sink partially filled with icy cold water. (Water in sink should come about 3/4 way up side of stock-filled pot.) Let stand until stock is cooled, stirring occasionally. Refrigerate or freeze in airtight container(s) until ready to use. Remove fat from surface before using.
Stock can be made ahead of time. Cool, then refrigerate up to 3 days or freeze up to 2 months. Remove fat from surface before using as desired.