Tornado Omurice Omelette

Name: Tornado Omurice Omelette
Ingredients: 1/2 tablespoon neutral oil; 1/2 teaspoon toasted sesame seeds (ground); 1/2 tablespoon flour; 1 tablespoon low-sodium soy sauce; 2 ½ tablespoons ketchup; 1/2 tablespoon brown sugar; ½ tablespoon mirin; 1/2 cup vegetable broth (or chicken broth); ¼ teaspoon salt; 1/2 onion (diced); 1/2 can spam (diced); 3 garlic cloves; 1 red bell pepper (finely diced); 1 cup cold rice; 2 tablespoons ketchup; 1 1/2 tablespoon low-sodium soy sauce; 4 eggs (beaten)