Preheat oven to 200 °C (fan) and place red bell peppers onto a lined baking tray. Let them roast in the oven for about 25 minutes until the skin is getting dark.
While roasting, put 1 Tbsp of olive oil in a medium pot and fry the onion, garlic and ginger on medium heat until soft and golden brown.
Then add turmeric powder, tomato paste, salt and pepper. Add celery and 1 cup of vegetable broth. Let it simmer on medium heat for 5-10 minutes.
Now take the bell peppers out and let them aside to cool down for few minutes.
Then peel the red bell peppers and place them in a high speed blender (or a big mixer). Add the ingredients from the pot to the blender, add the remaining vegetable broth (1 cup) and coconut milk (½ cup). Blend until smooth.
Taste and season with some extra salt and pepper if needed. Serve it in 2 medium bowls with extra coconut milk, some chili flakes, roasted buckwheat and fresh parsley leaves. Bon appetit.