Slice the onion into little pieces and brown it with vegetable oil. Slice the pepper and add them to the onion. Peel tomatoes and grate them. Squish the garlics and cook it with onion, pepper, tomatoes and pepper sauce. When tomatoes take the water in, add thyme, salt and black pepper. Cook them for another 10 minutes and turn off the oven. Filter the mix and let it cool down. Now, it's time! Pour the sauce on french fries and you're ready to go. Enjoy!