Roasted Cauliflower Tacos / 1/2 head of green cabbage (about 1/2 pound), 1 small carrot, 2 tablespoons lime juice, 2 tablespoons rice vinegar, 1 teaspoon olive oil, 1/8 teaspoon salt, 1/3 cup chopped cilantro, 1 head cauliflower (about 1 pound), 3/4 cup beer, 1/4 cup vegetable broth, 1 tablespoon lime juice.