Keep trim frozen until you're ready to use it, then thaw the entire block. We recommend using it to make a bunch of game sausages at once. Once turned into bulk sausage or sausage links it can be refrozen.
For thawing instructions please read Safely Defrosting Food for Maximum Flavor.
For freezing tips check out How to Freeze Better at Home
Grind this trim thawed but cold using a meat grinder or attachment on your mixer. Mix with complimentary flavors of your choice and either use as sausage patties or pack the sausage into sausage casings to make links.
Flavors we recommend for homemade venison sausage making include thyme, Tellicherry peppercorns, fruit (apples, cherries, red currants), dried peppers, rosemary, red wine, and juniper berries.
Home Sausage Making Tutorial