Rub the pork shoulder with salt and pepper and wrap in aluminum foil. Let it steep in the refrigerator for about 1 hour.
Put the meat with the quartered onion and the peeled garlic cloves in the Römertopf. Pour in some water. Put in the oven for approx. 2 hours at 200 ° C.
The gravy can be thickened with flour or a sauce thickener. This goes well with spaetzle and potato salad.