I cook these skewers under the broiler in the winter, but they would be wonderful on the grill as well.
3 tablespoons soy sauce
1 clove garlic, minced
1 teaspoon freshly grated ginger
1/4 teaspoon freshly ground black pepper
1/4 teaspoon five-spice powder
1 pound beef sirloin, cut into 2-inch cubes
1 large yellow bell pepper, cut into 2-inch pieces
If using wooden skewers, cover about 12 of them with water and let soak until ready to use. Combine soy sauce, garlic, ginger, black pepper, and five-spice powder in a medium bowl. Add beef and toss to combine. Cover and chill for an hour.
Heat broiler to high and arrange rack in the lower third of the oven. Thread 4 pepper pieces and 3 beef pieces onto each skewer, starting and ending with the pepper, alternating between each. Place on a baking sheet and broil about 10 minutes or until browned and blistered.