Green Tomato Salsa #2

Ingredients:
6 Green tomatoes; peeled
-- cored, seeded
-- coarsely chopped
1 Granny Smith apple; peeled
-- cored, coarsely chopped
1 md Onion; peeled and minced
2 tb Sugar
1 sm Jalapeno; seeded, deveined
-- minced
2 tb Grated ginger
2 tb Lemon zest
1/2 ts Salt; plus more to taste
1 ts Freshly ground pepper
-- plus more to taste
1 c Fresh cilantro; minced
Instructions:
Place tomatoes in a large cast-iron skillet. Add apple, onion, sugar, jalapeno, ginger, lemon zest and salt and pepper. Cook over low heat until thickened into a heavy paste, about 35 to 45 minutes.