Drain jackfruit in a strainer, and rinse under cold water for one minute (takes the sweetness away).
Separate jackfruit pods/seeds by hand and reserve for a later recipe. Cut out harder parts of jackfruit and reserve for later. (You want as much stringy, clumpy, soft texture as possible)
Re-rinse the separated jackfruit again one more time.
In a large bowl, add all wet ingredients except jackfruit. Whisk together. Add seasonings, fresh dill and onions, and stir together. Adjust taste to your preferred saltiness/acidity. Add jackfruit to mixture and fold it in.
Let marinate in fridge covered for 1 hr.
Butter white bread, add cheese on inside of both bread pieces, cover and slow grill the for approx 10 minutes until golden brown.
Add tuna on one side bread, and flip into a sandwich, Gently smash together to secure it, grill a little more.
Return to a plate, slice in half and enjoy!!
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