Jack Nicklaus Guacamole Dip

2 avocados, peeled and stoned
1 medium onion, chopped
2 green chilies, deseeded and chopped
1 tablespoon of lemon juice
1 teaspoon of salt
Freshly ground black pepper to taste
4 to 8 tablespoons of mayonnaise, to taste
2 medium tomatoes, skinned and finely chopped
Tortilla chips, to serve

Place the avocados, onion, chilies, lemon juice, salt and pepper in a
food processor or blender and process until creamy. Add the mayonnaise
and process briefly, then turn the mixture into a bowl and stir in the
chopped tomatoes. Cover and chill. Serve with tortilla chips. Serves 4
to 6