In a large heavy-bottomed saucepan, sauté the garlic in olive oil over medium heat for 30-seconds or until fragrant – be careful, you do not want the garlic to brown. Add the mushrooms and, stirring occasionally, let it simmer for 8 minutes. Add 1 tablespoon salt, wine, 2 teaspoons fresh ground pepper and let it cook for 8 more minutes. Add the beans and 2 cups of its cooking water and, stirring occasionally, let it simmer for 20 more minutes or until the beans are soft, and the stew thickens. Taste and add salt, black pepper, or more of the cooking water from the beans if it is too thick. Remove from heat, add the parsley and serve hot.