Home Made “SPAM®”:
2 pounds pork shoulder
8 ounces ham, roughly chopped (I used uncured ham, European-style)
2 cloves garlic, roughly chopped
1 Tablespoon sea salt
1 Tablespoon sugar
¼ cup potato starch
Preheat oven to 300°F
Cube pork into 2-inch chunks. Leave in freezer for about 20 minutes to firm it up for grinder
Grind pork, using meat grinder
Mince ham and garlic in food processor. Add mixture to pork
Add salt, sugar, and potato starch. Mix thoroughly with hands
Pack one (of 2) 9×5x3 loaf pan with pork mixture. Cover with foil.
Center loaf pan in water bath in oven
Bake for 3 hours, to internal temp of at least 155°F
Discard accumulated fat (presumably, this is the undesirable element mentioned in the OP)
cover with foil again. Nest the other (empty) loaf pan on top of loaf. Place about 6 lb weight in the pan
Refrigerate overnight with weights.
Unwrap and store refrigerated in air-tight bag or container for up to 3 or 4 days
It can also be frozen in airtight freezer bag for up to 2 months
thaw overnight in refrigerator before using.