Write a shopping list for me and group the ingredients by type. I want to make stir-fried teriyaki tofu for dinner and I want enough ingredients to make a sauce, because I don't want to buy a bottle of sauce. This meal will serve four people.
Produce:
 1lb broccoli florets
 One yellow onion
 One red bell pepper
 One green bell pepper
 One small knob ginger
 One bulb garlic
 
 Protein:
 1lb extra firm tofu 
 
 Misc:
 1 can corn starch
 8oz bottle soy sauce
 1 bag of dark brown sugar
 Red pepper flakes