Preheat oven to 350°.
Season the pork roast with the oregano, thyme, coriander, salt, and black pepper.
Heat the vegetable oil in a large frying pan. Add the pork roast. Cook on medium heat, turning the pork roast until all sides are browned.
Remove the skin from the onion and cut into 1-inch pieces. Remove the skin from the garlic and cut into thin slices. Remove the stem and core from 2 of the apples and cut into ½-inch slices.
Put the pork roast in a large baking dish. Cover with the apple juice and white wine. Sprinkle the apple pieces, onion, and garlic on top. Cover and bake for 1 hour.
Remove the peel, stem, and core from the remaining apple. Place in a food processor or blender and blend until puréed. Boil 1 cup of water. Add the gelatin. Stir in the apple purée. Cool in the refrigerator for 15 minutes.
Remove the meat from the oven. Cut into ½-inch pieces and arrange on a platter. Top with the gelatin mixture right before serving.
