In a medium sized bowl, add all the sauce ingredients apart from the cornstarch and whisk until well-incorporated.
Taste it and add in any sweet or sour ingredients to your taste preference!
Heat the oil over a medium heat in a large skillet/pan.
Add in the crushed garlic and sauté for 2-3 minutes until fragrant (don't burn!)
Next, add in the mushrooms, peppers and broccoli and stir fry for 5 or so minutes until softened.
Add the chickpeas and sauce into the pan and bring to the boil while stirring, then turn down to simmer for 10 minutes.
In a small bowl/cup mix together the cornstarch and water, then pour into the pan.
Stir together and let the sauce thicken. It should be thin but sticky!
Serve with rice and a sprinkling of sesame seeds. Enjoy!