01 - Rinse buckwheat groats under cold water and cook according to package instructions until tender, about 15 minutes. Drain and let cool.
02 - In a large bowl, combine the cooked buckwheat, onion, garlic, grated carrot, salt, cumin, and black pepper. Mix well.
03 - Add the beaten eggs to the mixture and stir until fully combined.
04 - Heat olive oil in a skillet over medium heat. Form the buckwheat mixture into patties and fry for about 4-5 minutes on each side or until golden brown.
05 - For the tomato relish, combine diced tomatoes, red onion, basil, balsamic vinegar, salt, and pepper in a bowl. Mix well and let sit for 10 minutes to allow flavors to meld.
06 - Serve the buckwheat patties hot, topped with tomato relish.