Indonesian Beef Sate

Ingredients

• 1/4 c. vegetable oil
• 1 c. finely chopped onion
• 4 garlic cloves, finely chopped
• 1 tsp. grated fresh ginger
• 3/4 cup water
• 3 Tbsp. dark soy sauce
• 4 tsp. chili powder
• 1 Tbsp. peanut butter
• 1 Tbsp. turmeric
• 1 tsp. brown sugar
• 1/2 tsp. finely grated lemon peel
• 2 lbs. flank steak, slice crosswise into strips 1/8 inch thick