Human: How can I make my own homemade teriyaki sauce? Assistant: 

1. Start by gathering the necessary ingredients - soy sauce, brown sugar, garlic, ginger, and either sake or mirin.
2. Combine 1/4 cup of soy sauce, 1/4 cup of brown sugar, and 2 cloves of minced garlic into a medium bowl.
3. In a separate small bowl, mix 1 teaspoon of freshly grated ginger and 2 tablespoons of either mirin or sake.
4. Pour the ginger and mirin mixture into the soy sauce mixture and stir until fully combined.
5. Cook the mixture in a saucepan over medium-high heat until it begins to simmer.
6. Reduce the heat to low and simmer for 10 minutes, stirring occasionally.
7. After 10 minutes of simmering, taste and adjust the seasoning as needed.
8. Allow the sauce to cool before serving.