Place 250 grams of skinless, boneless chicken breast half, 1 peeled and cut carrot, 1 egg white, 2 teaspoons of cornstarch, 1/2 teaspoon of white sugar, 1/2 teaspoon of ground ginger, and 1/4 teaspoon of ground black pepper in a food processor.
Pulse the ingredients until the chicken is well minced.
Cut each of the 4 slices of white bread into 4 triangles.
Spread the tops and sides of each triangle with the chicken mixture.
Melt 1 1/4 tablespoons of margarine in a 12-inch nonstick skillet over medium heat.
Place half of the triangles, spread side down, in the skillet and cook until golden brown, about 4 minutes.
Flip the triangles with a spatula and cook until the other side is brown, about 2 minutes.
Transfer the cooked triangles to a serving platter and keep warm.
Repeat the process with the remaining 1 1/4 tablespoons of margarine and triangles.
Serve the chicken toast with 1/3 cup of soy sauce diluted with water for dipping.