Roasted Beer and Lime Cauliflower Tacos with Cilantro Coleslaw

Name: Roasted Beer and Lime Cauliflower Tacos with Cilantro Coleslaw
Ingredients: 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; 11/2 teaspoons tamari or soy sauce; 11/2 tablespoons chipotle hot sauce; 1 to 2 garlic cloves, sliced; 11/2 teaspoons chili powder; 1 teaspoon smoked paprika; 1/4 teaspoon ground cumin; 1/4 teaspoon garlic powder; Pinch of salt; 1 tablespoon olive oil; 1/2 yellow onion, chopped; 6 corn tortillas; 1 avocado, sliced; Tomato salsa, for serving