Beef Nachos

Bahan-bahan (6 porsi)

• 1 tablespoon minced jalapeño peppers, (from 1 pepper (seeded; see note))
• 2 scallions, (light and dark green parts, thinly sliced)
• 1 small clove garlic, (minced)
• 2 tablespoons fresh cilantro leaves
• ¼ teaspoon salt
• 1 tablespoon lime juice, (from 1 lime)
• 2 small ripe tomatoes, (about ¾ pound (340 g), cored and diced)
• 1 tablespoon vegetable oil
• 1 small yellow onion, (finely chopped)
• 1 large clove garlic, (minced)
• 1 lb (90 to 93%) lean ground beef
• 2 tablespoons chili powder
• ½ teaspoon dried oregano
• 1 teaspoon ground cumin
• ¼ teaspoon cayenne pepper
• ¼ teaspoon salt
• 1 tablespoon tomato paste
• 1 (10-oz) bag tortilla chips
• 1 pound (16 oz) shredded Mexican blend cheese (4 cups)
• 2 jalapeño peppers, (thinly sliced into rounds (optional))
• Lime wedges
• Sour cream
• Homemade or store-bought guacamole