Wash your tomatoes. Remove stem from each tomato. Dice tomatoes.
Put tomatoes in bowl. Add spices and stir. Cover.
Place your tomatoes in the refrigerator overnight. If you need quick diced tomatoes you can skip this step but for full flavor marinate them overnight.
Place tomatoes in a pot over medium heat. Cook for 30 minutes.
Serve immediately or you can freeze them.
Notes
If you want to do 10, 15, 20 or more tomatoes just double the ingredients accordingly. If your tomatoes are juicy and you are left with lots of liquid afterwards, turn it into tomato paste! Simply put juice in a pot over medium-high heat and cook until tomato paste consistency forms. This usually takes a few hours depending on the amount of juice you have.