Grilled Shrimp Tacos

Ingredients

• 1 small shallot
• 1 jalapeno pepper (quartered and seeded)
• 2 cloves garlic (peeled)
• 1 tomato (seeded and chopped)
• 1 avocado (peeled, seeded and cut into chunks)
• 3/4 teaspoon salt
• 1 tablespoon fresh lime juice (from half a lime)
• 1/4 cup fresh cilantro leaves (loosely packed then chopped)
• 1 1/2 tablespoons olive oil
• 1 1/2 teaspoons chili powder
• 1/2 teaspoon salt
• 1/8 teaspoon cayenne pepper
• 1 1/2 pounds large shrimp (peeled and de-veined)
• 10 6-inch corn tortillas (or flour tortillas)
• 2 cups chopped red cabbage
• 1 cup sour cream
• 2 limes (cut into wedges)