Cut the beef into 3cm cubes, place them on a baking sheet, and freeze them for 25 minutes. That way the meat won’t turn all gummy in the grinder.
Attach a fine grinder plate to the hopper. Fill a bowl with 2 tsp each of kosher salt, ground black pepper, and dried minced onion; these reinforce the beefy flavor.
Feed a few cubes through the grinder, followed by a pinch of the spices. Repeat. Our tasters preferred burgers with the spices ground in.