The Solid in Vegetable Oil/Water of variants of Century Tuna are my favorite since you really get your money's worth. I delight myself in experimenting on very simple dishes with a can or two. Aside from the usual pasta and sandwich filling, these are some of my experiments before that eventually became a "recipe"
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First is my Century Tuna adobong tuna sisig. Saute tuna then add soy sauce, vinegar (or sinigang powder) and pepper. Cook until almost dry then add oil and generous amount of chopped onions and/or chili peppers.
My favorite is Century Tuna tuna sinigang. Just boil the tuna in a cup of water then add sinigang powder and kamote tops, kangkong leaves or even pechay. Here's my updated Century Tuna sinigang.
Another quick recipe is Century Tuna yangchow rice. As the name suggests its just tuna fried rice. Just add tuna to a mix of vegetables (carrots, corn, green peas, bell peppers, etc) and then seasoning of choice, butter and beaten egg.
And here's the experiment of all my experiments, Century Tuna X. I literally just threw in what I saw. I just boiled potato slices with tuna (in vegetable oil) and seasoned with "Magic Sarap", Maggi liquid seasoning, white pepper, parmesan cheese, calamansi and pineapple juice until almost dry and topped it with garlic. Don't worry I lived to tell about this so its safe! (lol)
Now here's a more sinigang-looking way of serving Century Tuna. Just boil all your sinigang vegetables (string beans, eggplant, radish, etc) in water with sinigang mix. Then serve with canned tuna.
Sauteed Century Tuna with eggplant and radish strips. Just saute tuna, add the vegetables and cook them to th way you want it.
Though at times, I just eat it plain mixed with vinegar and/or with apples and wheat bread on the side.