How to make ginger tea at home cheaply with ginger powder

Anyways, here is the recipe: Ingredients \t•\t3 cloves garlic, minced \t•\t1 tbsp ginger paste \t•\t1 cup water \t•\t1/2 cup sugar \t•\t1/3 cup rice vinegar \t•\t1 tbsp ketchup \t•\tRed pepper flakes, to taste \t•\t2 tbsp cornstarch \t•\t2 tbsp water (for slurry) \t•\t1.5 lbs chicken, cut into bite-sized pieces \t•\t3 eggs, whisked \t•\t2 cups cornflakes, crushed \t•\t1 tsp garlic powder \t•\t1/2 tsp pepper \t•\t1 tsp salt \t•\t1/2 cup flour \t•\tVegetable oil, for frying Instructions In a pan o