Home-made Tuna Sandwich

canned tuna and red onion slices in a bowl
Transform plain canned tuna into delicious tuna sandwich fillings with just a few fresh ingredients.

Speaking of canned tuna sandwich fillings, the tiny packages, exotic flavors and the premium price are synonyms for novelty and convenience. Lemon and black pepper, sweet chili or basil and tomato are all the rage. But nothing tastes as delicious as a can of plain tuna flavored with fresh ingredients.  It’s no rocket science.

It was my friend Leah who showed me how to prepare these simple tuna fillings when we were making sandwiches for a picnic. She opened a can of tuna, drained the water, and mixed it with olive oil, minced red onions and mayonnaise. I was instantly hooked by the flavor and amazed how a can of plain tuna that is rather dull to begin with had been transformed into something so interesting and tasty. Plus, it was therapeutic to watch her work; always well paced and well poised no matter what she was doing, even when the kids were jumping about and we were under time pressure to go out! Needless to say everyone loved the sandwiches.

I have experimented with a few different flavors since. In this recipe I used vinegar and a small amount of sugar instead of mayonnaise. If you have home-made mayonnaise, simply mix it with the drained tuna and minced onion and it’s done. These tuna fillings have become part of my my picnic staple and one of my daughter’s favorite school lunches that she can make herself.

Preparation: under 5 minutes             Cooking: n/a

  • 1 can of tuna in springwater, drained
  • 1/2 red onion, chopped or minced
  • 1 tbsp apple cider vinegar
  • 1 tbsp sugar
  • 3/4 tbsp olive oil
  • freshly ground black pepper
Mixed all ingredient together. Use as a sandwich filling.

tuna-sandwich filling on a piece of toast

Mix the tuna with some chopped up sundried tomato and feta cheese, or with freshly squeezed lemons juice and sprinkle freshly ground black pepper. Have fun with it!

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