Five-Ingredient Pork Roast

Name: Five-Ingredient Pork Roast
Prep time: 5 min
Cook time: 35 min
Total time: 40 min
Ingredients: 2 1/2 pork roast (boneless shoulder); 2 teaspoon Sea Salt; 1 large onion (cut into thick slices); 2 garlic (minced); fresh rosemary (or any fresh herbs, for garnish); lemon (slices, for garnish)