Pressure Cooker Teriyaki Chicken

Okay, one of our wedding gifts was a pressure cooker. Never in my life had I used a pressure cooker or seen one used. But this was one of Greg's requests for our registry so we did it. It's not used much at this point, but I have tried to figure it out, but everytime I do so Greg reminds me how high pressure can explode if not done right. Okay, so I've managed to find 1 recipe that I can do in it & it tastes great. Pretty much 20 minutes & it's ready!

Ingredients:
3/4 cup brown sugar
3/4 cup soy sauce
1/4 cup cider vinegar
2 tablespoons ground ginger
2 tablespoons garlic powder
1 teaspoon ground black pepper
1 (20 oz) can crushed pineapple
1 cup chicken stock
2-3 pounds boneless, chicken breast (or thighs)

Directions:

1. Combine brown sugar, soy sauce, cider vinegar, ginger, garlic powder, pepper, crushed pineapple and juice, and chicken stock in a bowl and stir until the brown sugar is dissolved.
2. Place chicken thighs in the pressure cooker and pour in the sauce. Stir gently to coat. Bring the pressure cooker up to high pressure over high heat, then reduce the heat to low, maintaining high pressure. Cook for 20 minutes.
3. Reduce the pressure using the rapid-release method. Let cool and serve the chicken over rice.