Start by finely chopping the tomatoes, bell peppers, cilantro, mint and onions using a sharp knife.
In a small bowl, combine tomato paste, olive oil, red pepper flakes, black pepper, minced garlic, salt, sumac and lemon juice.
Whisk everything together until you get a uniform mixture.
Add all the chopped veggies and herbs to a large bowl.
Add the seasoning paste to the chopped veggies.
Mix well to combine and top with some more olive oil.
Notes
In addition to the ingredients, you can also try and add in your choice of other ingredients and bring in a bit of difference to the Turkish style Ezme.
Chopped green peppers and cucumbers are great, because they have versatile and simple flavors that work well along with the other ingredients.
Remember to de-seed the tomatoes before you use them for the recipe. This will help keep the Ezme from getting watery, and you'll have the perfect texture you're looking for.
The key to getting the perfect balance of flavors and textures is to keep tasting and adjusting. Based on your personal preference, you can add more or less of the spices and seasonings of your choice.