Heat 1 tbsp of the annatto oil in a large pot on medium to high heat. Add onion, leek and garlic and sweat until translucent.
Add bell peppers and jackfruit and continue cooking for a few minutes.
Stir in wine and crushed tomatoes. Add all other ingredients for the guiso.
Simmer for 30 minutes, until the jackfruit is soft and starting to fall apart.
Crush and divide the jackfruit pieces with a spoon or fork.
If the guiso is too wet, let it simmer without a lid so the water can evaporate.
Alternately, thicken it by taking some of the liquid into a bowl and stirring in corn flour. Return corn flour slurry to pot.
Taste the guiso, It should be sour, tangy and sweet.
Set aside and let cool. The guiso can be prepared a few days in advance to save time.