Here, I use chorizo and kimchi. The juice of the chorizo will flavor the dish, and the kimchi will add a kick of sour in counterpoint to the umami.
1 chorizo sausage, chopped
2 slices whole wheat or multigrain bread, cut into small cubes
1 big spoonful of kimchi
a handful of spring greens or arugula
a sprinkling of sharp cheddar cheese
Heat up olive oil in a skillet and cook the chorizo. When the chorizo is almost cooked, stir in the other ingredients. Let cook for another minute, then serve.