Rinse everything needed and slice the cucumber, tomatoes, onions and cooked eggs... Set aside

Place pan on heat, add 1 tablespoons vegetable oil. Add the sliced onions and cook on low heat. Add seasoning cube to the onions.

Get a small bowl, add the sardine, add sweet corns, pepper, caramelised onions, add mayonnaise as desired. Stir thoroughly to combine

Get a toasted sliced bread, smear the not toasted side with butter, add sliced eggs on top of the buttered part, add cucumber or whatever vegetable you're using.

Get a another bread and add the mayonnaise mix thoroughly on one side. Bring together with the other vegetable part and your sandwich is ready....