Open and drain the cans of tuna and scoop the meat out into a bowl. Add the mayonnaise, salt, pepper and mustard and set the bowl aside.
Chop up the onion, green chili and cilantro and add to the bowl.
Combine everything till it is well incorporated and enjoy in a sandwich, atop a bed of greens or as a dip with your favorite crackers.
Video
Notes
Make the spread creamier by adding more mayonnaise.
I always try and purchase wild caught tuna, packed in water, as farm raised can have hormones and antibiotics. Pole caught is best and Skip Jack is better than Albacore as it is smaller and hence less likely to have the levels of mercury found in bigger fish.