Brown turkey sausage in skillet. Drain excess grease, leaving a little to make the gravy, maybe about a Tbsp.
Add flour, stirring to coat the sausage thoroughly. Add milk slowly, stirring between small additions to avoid clumping.
Heat to boiling, stirring VERY frequently, then turn down heat so it’s just simering, and continue simmering until gravy is ALMOST as thick as you’d like – will thicken as it sits.
If it’s too thick for your taste, add more milk and warm back up. If not thick enough, add a little flour, and warm back up. In either case, stir pretty much constantly to avoid clumping or sticking or burning or…
Serve on toast or biscuits, doesn’t work too well with English muffins. Enjoy!