Thai Lemongrass Soup

Name: Thai Lemongrass Soup
Prep time: 10 min
Cook time: 15 min
Total time: 25 min
Cuisine: Thai
Ingredients: 2 (4 to 6 inch) lemongrass stalks; 1 tablespoon vegetable oil, (divided); 2 garlic cloves, (minced); 1 teaspoon freshly grated ginger; 4 cups vegetable broth; 1 teaspoon sambal oelek, (or to taste); 2 cups stemmed and sliced shiitake mushrooms; 1 cup cherry tomatoes, (halved); 7 ounces extra firm tofu, (drained and pressed for at least 15 minutes); 1/4 cup chopped fresh cilanto; 1 tablespoon lime juice; Soy sauce or tamari, (to taste)