1teaspoonred pepper flakesmore if you like it spicier
1tablespooncornstarch
8-10wooden or metal skewerssoak wooden skewers in water for 30 minutes to avoid burning on the grill
Sesame seedsoptional
Instructions
In a small bowl whisk the soy sauce, vinegar, water, sugar, garlic, ginger and red pepper flakes until sugar is dissolved.
Place steak cubes in a large ziplock freezer bag and pour in 1/3 marinade mixture. Place in refrigerator and marinate at least 6 hours but preferably overnight.
In a saucepan add the remaining marinade and whisk in cornstarch until mixed. Bring sauce to a boil then reduce heat to a simmer 20 minutes or until thickened. Set aside.
Heat a grill to medium high heat. Thread the skewers alternately with steak, peppers, onions, zucchini, and pineapple. Grill the skewers 3-4 minutes per side (or until desired doneness), brushing glaze over top after each rotation. Remove skewers and let rest 10 minutes. Brush with thickened teriyaki sauce and sprinkle with sesame seeds.
**Make sure you soak your wooden (or use metal) skewers for 30 minutes this helps them so they don't burn while on the hot grill.