You can use habanero peppers instead of jalapeno, but be sure to remove the seeds and only use half of the pepper. They are the hottest peppers anywhere!

4 medium very ripe tomatoes, peeled, seeded and diced 
1 fresh jalapeno pepper*, seeded and minced 
1 tablespoon chopped fresh cilantro leaves 
1 medium red onion, minced 
1/2 teaspoon granulated sugar 
1/2 teaspoon salt, or to taste 
1/2 teaspoon freshly ground black pepper, or to taste
Juice of 2 Key limes or 1 small lime

In a medium size glass bowl mix together the tomatoes, jalapeno pepper, cilantro, onion, sugar, and salt and pepper. Combine well. Add the juice; cover and refrigerate for 4-5 hours before serving.

Serve with fresh tortilla chips.