Shrimp Ceviche

Ingredients (9)

• 1 large white onion, quartered
• 2 to 4 serrano peppers, seeded and coarsely chopped
• 2 medium cucumbers, peeled, quartered and seeds removed
• 2 large tomatoes, cut into chunks
• 2 pounds peeled and deveined cooked shrimp (26-30 per pound)
• 3/4 cup lime juice
• 1/2 teaspoon salt
• 1/4 teaspoon pepper
• Tortilla chips or tostada shells