In a bowl, combine ground sage, salt, pepper, and crushed garlic to create a flavorful seasoning mixture.

Rub the seasoning mixture all over the pork tenderloin, ensuring it is evenly coated.

Pour half a cup of water into the slow cooker and place the seasoned pork tenderloin inside.

Optional: Add any additional herbs or sauces of your choice to further enhance the flavors.

Cook the pork tenderloin on low heat for approximately 6-8 hours, allowing it to become tender and juicy.

About an hour before the cooking time finishes, prepare the glaze. In a small pan, combine cornstarch, brown sugar, balsamic vinegar, soy sauce, and water. Stir well until the ingredients are thoroughly mixed.

Heat the glaze mixture in a skillet over medium heat, stirring occasionally, until it thickens to a desired consistency (approximately 4 minutes).

During the last hour of cooking, brush the pork tenderloin with the prepared glaze.

For a caramelized crust, remove the pork tenderloin from the crockpot, place it on a baking sheet, and generously brush it with the glaze. Broil it in the oven for 1-2 minutes until the glaze caramelizes and becomes bubbly. Repeat this step a few times for desired results.

Serve the succulent pork tenderloin with a side of the glaze, allowing the flavors to mingle and create a truly extraordinary dining experience.