11.   If it has a water pan, fill it with reserved marinade and water.

12.   In a large saucepan, heat the reserved marinade to boiling.

13.   In a separate pan, boil the reserved marinade.

14.   In a small saucepan over high heat, bring the reserved marinade to a boil.

15.   In a small saucepan, bring the reserved marinade to a boil.

16.   Mix the reserved marinade with the water and vinegar.

17.   Reduce heat to medium-low and add reserved marinade.

18.   Remove tuna from pan, pour in reserved marinade, and bring to a boil.

19.   Stir in artichoke hearts, reserved marinade and onions.