For the ketchup: Cut the tomatoes into pieces.
Place them in a bowl together with the chili pepper, garlic, brown sugar, vinegar, tomato paste, Worcestershire sauce, Tabasco, canola oil, stick of cinnamon, and star anise.
Mix everything well.
Place the bowl in the BBQ and let it simmer for 2 hours at 120°C.
The potatoes: Cut the potatoes into slices or cubes with the skin.
Drizzle with grape seed oil and season with pepper and salt.
Put them in the BBQ at 200°C until they are cooked, stirring regularly so they color on all sides and become nice and crispy; the time will depend on how large they are cut and the temperature in your BBQ.
After 2 hours, remove the ketchup mixture from the BBQ.
Remove the stick of cinnamon and star anise.
Put all the other ingredients in a pot and blend everything until you have a smooth mixture.
Once the potatoes are cooked, take them out of the BBQ.
Place them on baking paper and distribute them on plates.
Put the fresh mayonnaise in a piping bag and pipe it in lines over the potatoes.
Finish with the homemade smoked ketchup and finely chopped spring onion!