Where to buy raw materials for sweet corn, waffles etc

hi guys,

i need your help. i intend to open new small shop selling drinks like pearl milk tea etc, sweet corn n waffle. anybody know where to buy raw materials such as flavor drinking powder, sweet corn and waffles flour. i really need your help here. anybody know any information? your help is highly appreaciated.
thank you … :slight_smile: :slight_smile: