Chef John's Summer Sausage
You can get freshly ground beef from your butcher.
The salt is best measured by weight, if you have a scale. Use 20 grams.
Use a probe thermometer if possible; it will ring an alarm as soon as the temperature is reached.
Feel free to spice this any way you want, but it will help if you include a pinch of pink curing salt (such as InstaCure™) #1).