Mediterranean beefburgers with red-hot tomato salsa

Ingredients

• 500 g lean ground beef
• 1/4 cup whole-wheat breadcrumbs
• 2 garlic cloves (crushed)
• 1/4 cup sun-dried tomatoes in oil (drained and finely chopped)
• 2 tbsp cilantro (chopped)
• 4 Burger buns
• 50 g arugula
• 250 g vine-ripened tomatoes (finely diced)
• 1 red pepper (deseeded and finely diced)
• 1/2 mild green chili pepper (deseeded and finely chopped)
• 1 red chili pepper (deseeded and finely chopped)
• 2 tsp balsamic vinegar
• 1 tbsp fresh chives (snipped)
• 1 tbsp cilantro (chopped)